mass factor Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 0.003 mol H2SO4 x (2 mol NaOH/ 1 mol H2SO4) x (40 g NaOH/1 mol NaOH) = 0.24 g NaOH . If one cup of pancake mix will yield 15 pancakes, how many cups of pancake mix will be required to yield 60 pancakes? sodium is oxidized Hence, $\ce{Na^{+}, Cl^{-}}$ are spectator ions as they don't participate in ionic reaction. Ex: A + BX --> AX + B Balance hydrogen atoms by adding H+ ions. Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO42-, CO32-, PO43-, OH-, or S2-. b) 3H+ + PO3- + 3K+ + 3 OH- --> 3K+ + PO3 - + 3H2O (l) Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 4:2 2 HCl (aq) + Ba(OH)2 (aq) --> BaCl2(s) + 2 H2O (aq) 2KClO32KCl+3O2 Find more Chemistry widgets in Wolfram|Alpha. Identify which of the following is soluble. a) 0.0444 M (c) Heat from the fire removes water vapor from the air. 1KMnO41MnCl2 H2S (g) An aqueous solution contains the following ions: Cl, F, HCO3, Mg2+, and NH+4. D) mol solute/kg solvent subscripts. moles of solute = M x V Your answer should have three significant figures. 30.4% A) 125 Which of the following ions will form a precipitate with the lead (II) cation in solution? 2 Al (s) 6 H+ --> 2 Al3+ (aq) + 3 H2 (g). 2:4 Such as using $\ce{ ->[CH3OH]}$ to indicate that the reaction is happening in methanol. 2KMnO41MnCl2, The quantitative relationship between the amounts of substance consumed and produced by a reaction is known as: B) mol solute/mL solvent d) LiNO3 (aq) + Na3PO4 (aq) -->, The amount of a substance that dissolves in a given quantity of solvent at a given temperature to form a saturated solution 20, The substances on the right side of a chemical equation are called: Check image for possible answer choices, NH3+ (aq) + HNO3 (aq) --> NH3NO3 (aq) + H2O (aq) = 0.0195 g Na2S Your highlighted equations have some erroneous in ions (e.g., $\ce{Ba^2+ + 2 Cl- -> BaSO4}$). Your answer should have three significant figures. 1.00 M x 500.0 mL = 1.75x10^2 M x (V 2) By analogy to examples given in the text, predict what gas forms when Na2SO3 (a) reacts with HCl (aq). base. 4:2 Okay. NH3+ + 3H+ + NO3- --> NH4+ + H2O + NO3- (Be sure to specify states such as (aq) or (s). 16 If 2.67 moles of fluorine and 1.11 moles of ammonia react according to the following equation, how many grams of HF will form? A) This solution contains 0.200 mol of Ca3(PO4)2. First, we balance the molecular equation. Zn + 2 HBr --> ZnBr2 + H2 b) (0.0072/10 g) x 100 = 0.716 %, A mysterious white powder is found at a crime scene. Complete ionic and net ionic equations, Khan Academy. The sample is then titrated with 47.20 mL of 0.02250 M MnO4 (-) soln. Zn2+ (s) + CuSO4 (aq) --> ZnSO4 (aq) + Cu 2+ (aq) Why isn't Al(OH)3 classified as a strong base? mol = M x L C) standard point This means that we will split them apart in the net ionic equation. c) SCl2 a) Al is normally 3+, so N = 3- HCl(aq)+NaOH(aq)NaCl(aq)+H2O(l) Answer: C. Calculate the molarity of a solution made by dissolving 5.00 g of glucose (C6H12O6) in sufficient water to form exactly 100 mL of solution. E) 2Zn (s) + H+ (aq) 2Zn2+ (aq) + H2 (g), D) Zn (s) + 2H+ (aq) Zn2+ (aq) + H2 (g), Sodium does not occur in nature as Na (s) because ________. precipitation titration Then the resulting reaction is H2 (aq) + 2 OH (aq) 2 H2O (). A reaction in which an acid and a base react in stoichiometrically equivalent amounts; the neutralization reaction between and a metal hydroxide produces water and salt, Any ionic compound whose cation comes from a base and whose anion comes from an acid. FeCl2 (aq) + Mg (s) --> Fe(s) + MgCl2 (aq) b) 17.3% Select the correct answer below: Ba2+ (aq) Br (aq) SO24 (aq) BaSO4 (s) Br- (aq) Hydrochloric acid dissolves solid aluminum hydroxide. . b) 7.43x10^-2 M c) 1:1 Your answer should have two significant figures. What is the stoichiometric factor relating KMnO4 and MnCl2, representing the actual numbers of moles of each species that react and are produced according to the equation above? Do NOT write out coefficients that are equal to 1. d) Both Chloric Acid and Hydrobromic Acid 2:3, Which of the following shows the correct stoichiometric ratio of Fe2O3 to O2? On the right subtract any product that is not a solid, gas, or water. 0.015 mol K2CO3/L x (1 mol CO3 2-/1 mol K2CO3) = 0.015 M CO3 2- 7.5x10^-4 mol AgNO3 - 9.96x10^-4 mol AgNO3 = -2.46x10^4 mol AgNO3 A) Zn (s) + MnI2 (aq) ZnI2 (aq) + Mn (s) The products are the compounds that are produced as the result of a chemical reaction. a) P2O5 H2O (l ) + SO3 (g) + + HSO4 There are no ions the same on both sides of the equation. What is responsible for the odor of gasoline? Question: What is the net ionic equation for each of the following reactions? E) potassium bromide, What volume (mL) of a concentrated solution of magnesium chloride (9.00 M) must be diluted to 350. mL to make a 2.75 M solution of magnesium chloride? Ca(NO3)2 These are the ions that appear on both sides of the ionic equation.If you are unsure if a compound is soluble when writing net ionic equations you should consult a solubility table for the compound._________________Important SkillsFinding Ionic Charge for Elements: https://youtu.be/M22YQ1hHhEYMemorizing Polyatomic Ions: https://youtu.be/vepxhM_bZqkDetermining Solubility: https://www.youtube.com/watch?v=5vZE9K9VaJIMore PracticeIntroduction to Net Ionic Equations: https://youtu.be/PXRH_IrN11YNet Ionic Equations Practice: https://youtu.be/hDsaJ2xI59w_________________General Steps:1. e) O = -8, S= +6, In which compound is the oxidation state of oxygen -1? The substances generated by the chemical reaction are known as products. These are the ions that appear on both sides of the ionic equation.For Concentrated H2SO4 see: In this reaction, Fe2(SO4)3 will be slightly soluble (considered insoluble for net ionic equations) and will be a precipitate (solid) and fall to the bottom of the test tube. d) Na2SO3 or What is occurring in the following reaction: B) loss of oxygen, gain of electrons $$\ce{Ba^{2+}(aq) + 2Cl-(aq) + 2Na^{+}(aq) + SO4^{2-}(aq) <=> BaSO4(s) + 2Na^{+}(aq) + 2Cl-(aq)}\tag{3}$$. mol = M x L d) Pb (s) and Fe(NO3)2 (aq). 0.03 M K+:0.015 M CO3 2- So we can "cancel" the 2 Na+ (aq) and the SO4 (2) (aq) on each side. = 0.0025 mol HNO3 This ratio is called a stoichiometric factor, which is used to determine the relative amounts of substances that will be involved in a reaction. According to the soubility table, Ba2+ is not very soluble and therefore makes the precipitate. Anything with a solubility of less that 0.01 mol/L is generally INSOLUBLE $$\ce{Ba(OH)2 + H2SO4 -> BaSO4 (s) + 2H2O}$$. Common bases are NaOH, KOH, Ca(OH)2 and NH3+ NaCl is the quintessential ionic substance. The molecular reaction is given as, $$\ce {Ba (OH)2 + H2SO4 -> BaSO4 (s) + 2H2O}$$ Before moving to net-ionic reaction, let's see the reaction of $\ce {BaCl2, Na2SO4}$ [1]: 0 M. ! 0.0100 M x 0.00284 L = 2.84x10^-5 mol HCl A single alternative decision structure tests a condition and then takes one path if the condition is true, or another path if the condition is false. 3.93x10^-2 M A) 2H+ (aq) + 2OH- (aq) 2H2O (l) B) 2H+ (aq) + 2KOH (aq) 2H2O (l) + 2K+ (aq) C) H2SO4 (aq) + 2OH- (aq) 2H2O (l) + SO42 . If you have an aqueous solution that contains 1.5 mol of HCl, how many moles of ions are in the solution? L = mol/M Now write the equation ionically. C) mmol solute/mL solution Second, we. Carbon dioxide will evolve as a gas: Reaction 2: CaCO3(s) + H2SO4(aq) CaSO4(s) + H2O(l) + CO2(g) The arrow written next to CO2 . Answer: E. What is the molar concentration of K+ ions in a 0.015 M solution of potassium carbonate? What is the oxidation number of nitrogen Would the reflected sun's radiation melt ice in LEO? charge, increases D) potassium iodide D) 2HClO4 (aq) + CaCO3 (s) Ca(ClO4)2 (aq) + H2O (l) + CO2 (g) A) dilution of 500.0 mL of 1.00 M K2SO4 to 1.00 L What is the complete ionic equation of this reaction? d) Ag2SO4 C) 0.276 and 0.276 subscripts, The ratio of the coefficients of two substances in a chemical equation is called a: 15 ml = 0.015 L = 15 mL, What volume of a 1.00 M stock solution of glucose muse be used to make 500.0 mL of a 1.75x10^-2 M glucose solution in water? Rank the solutions in order of increasing electrical conductivity, knowing that the greater the number of ions in solution, the greater the conductivity. Select the correct answer below: The coefficients in the balanced chemical equation tell us the stoichiometric ratios of the substances involved in the chemical equation. Finally, we cross out any spectator ions. The reaction takes place but we really don't have a net ionic equation to write. How to Write the Net Ionic Equation for H2SO4 + NaOH = Na2SO4 + H2O Wayne Breslyn 625K subscribers 76K views 3 years ago There are three main steps for writing the net ionic equation. 2KMnO4+16HCl2KCl+2MnCl2+8H2O+5Cl2 d) The oxidation state of copper in copper sulfate is 0. Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents. Do both, just one, or neither of the following solutions conduct electricity? b) NaH Answer: B, a) How many grams of NaOH are needed to neutralize 20.0 mL or 0.150 M H2SO4 solution? TRUE/FALSE Spectators: NO3- and Na+. a) Molecular: C) 16400 B) 99 parts sample and 1 part diluent a) H3PO3 + 3 KOH --> K3PO3 + 3 H2O mol AgNO3 = 0.050Mx 0.015 L = 7.5x10^-4 mol AgNO3 Write the balanced molecular equation.2. B) potassium hydrogen carbonate Therefore, this reaction has no spectator ion and hence ${H_2O}$ will be included in the ionic reaction, which is given as: $$\ce{Ba^{2+} + 2OH- + 2H+ + SO4^{2-} -> BaSO4 (s) + 2H2O(l)}$$, [1]: Complete ionic and net ionic equations, Khan Academy. How is the molarity of a 0.50 M KBr solution changed when water is added to double its volume? No it will not form a precipitate because Ba(OH)2 is soluble. Calculate the net ionic equation for SrCl2 (aq) + H2SO4 (aq) = 2HCl (aq) + SrSO4 (s). a) mol of MnO4(1-) = plus sign a) Of the species below, only ________ is not an electrolyte. A) a molecular compound and a weak electrolyte. Is Koestler's The Sleepwalkers still well regarded? Select all that apply. What is the molarity of a NaOH solution if 48.0 mL neutralizes 35.0 mL of 0.144 M H2SO4? b) Barium Nitrate, First, we balance the molecular equation. Select the correct answer below: What are some tools or methods I can purchase to trace a water leak? coefficients b) How many milliliters of 0.50 M Na2SO4 solution are needed to provide 0.038 mol of this salt? Transcribed image text: Write a net ionic equation for the reaction that occurs when magnesium carbonate (s) and excess hydrochloric acid (aq) are combined. Does this reaction proceed far toward completion when equilibrium is reached? This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. Answer: E. a) How many grams of Na2SO4 are there in 15 mL of 0.50 M Na2SO4 e) More than one of the previous choices are true. products Select the correct answer below: Split soluble compounds into ions (the complete ionic equation).4. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. nonelectrolytes. E) H2CO3 (aq) + Ca(NO3)2 (aq) 2HNO3 (aq) + CaCO3 (s), A) Cu (s) + 2AgNO3 (aq) 2Ag (s) + Cu(NO3)2 (aq), Which one of the following is a correct expression for molarity? Which of the following is NOT a step in balancing redox reactions in acidic media? Write the balanced molecular equation.2. Ca+ (aq) + CO3 2- (aq) --> CaCO3 (s), What happens when you mix an aqueous solution of sodium nitrate with an aqueous solution of barium chloride? c) 23.5 mg Recall that for a quantum system, the first excited state has L22L^2 \approx \hbar^2L22. b) 2 HCl (aq) + Pb(NO3)2 (aq) --> PbCl2 (s) + 2 HNO3 (aq) "()" is not a standardized notation and it never was. The concentration of vinegar was once determined by the measuring the amount of potassium carbonate that had to be added for bubbling to stop. 3PbO+2NH33Pb+N2+3H2O Second, we write the states and break the soluble ionic compounds into their ions (these are the strong electrolytes with an (aq) after them). Identify all of the phases in your answer. Why did the Soviets not shoot down US spy satellites during the Cold War? M=mol/L We therefore write the state symbol (s) after the compound that precipitates out of solution.If you are unsure if a compound is soluble when writing net ionic equations you should consult a solubility table for the compound._________________Important SkillsFinding Ionic Charge for Elements: https://youtu.be/M22YQ1hHhEYMemorizing Polyatomic Ions: https://youtu.be/vepxhM_bZqkDetermining Solubility: https://www.youtube.com/watch?v=5vZE9K9VaJIMore PracticeIntroduction to Net Ionic Equations: https://youtu.be/PXRH_IrN11YNet Ionic Equations Practice: https://youtu.be/hDsaJ2xI59w_________________General Steps:1. a) when an aqueous solution of NiCl2 (Aq) is added to a test tube containing strips of metallic zinc, and Select the correct answer below: Given the fictitious chemical equation below: b) in Nitric Acid, HNO3? NaCl will conduct electricity, but not Methanol, the clustering of solvent molecules around a solute particle which helps to stabilize the ions in solution; Prevents cations and anions from recombining, What dissolved species are present in a solution of, A substance (Strong acids, strong bases and most salts) that is completely ionized in solution, A substance that only partially ionizes B) Mg (s) + 2HCl (aq) MgCl2 (aq) + H2(g) Na(s) AgNO3 (aq) + NaCl (aq) ---> AgCl (s) + NaNO3 (aq), Ag+ (aq) + NO3- (aq) + Na+ (aq) + Cl-(aq) --> AgCl(s) + Na+ (aq) + NO3- (aq) 4) The sum of oxidation numbers in all neutral compounds is 0. B) H+, OH-, Cl-, and Ca2+ Find a creative menu items using meat, poultry, and fish. B) HCl (aq) + NaOH (aq) H2O (l) + NaCl (aq) By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Are there conventions to indicate a new item in a list. BaCl2 + H2SO4 = BaSO4 + HCl Net Ionic Equation Net Ionic Equation Overall Chemical Equation Ensure that the elements on both sides of the molecular equation are balanced by using the online chemical equation balancer. When H2SO4is dissolved in water, its dissociation is complex and will not be discussed here. Be sure to denote any charges as needed. e) sucrose. Let's cancel them out, and we get the net ionic reaction: Now, let's see the reaction given in the question. Your answer should have three significant figures. C) potassium hypochlorite Homework questions must demonstrate some effort to understand the underlying concepts. D) 3Hg (l) + 2Cr(NO3)3 (aq) 3Hg(NO3)2 + 2Cr (s) "" is an obsolete symbol to denote solid state; consider replacing it with the currently recommended "(s)" notation. c) 10.0 ml x 10.0 M = (M2) x 250 ml Report your answer as a whole number without any decimal places. acid HBr,HNO3, and HI are strong acids: each of these will donate an acidic proton to water to generate hydronium in solution. Stack Exchange Inc ; user contributions licensed under CC BY-SA oxidation number of or... 2 Al ( s ) 6 H+ -- > AX + b Balance hydrogen atoms by adding ions... Will split them apart in the solution was acidified but we really do have. 23.5 mg Recall that for a quantum system, the First excited has. ( g ) that had to be added for bubbling to stop a creative menu items using meat poultry! We Balance the molecular equation conduct electricity weak electrolyte \ce { - > [ CH3OH ] } $ to that. Do both, just one, or water when H2SO4is dissolved in water, its is! Mix will yield 15 pancakes, how many cups of pancake mix will yield 15,! Many moles of ions are in the solution its volume meat, poultry, fish... To write was once determined by the chemical reaction are known as products really! L d ) the oxidation number of moles or weight for all reagents but we really do n't have net! H2S when the solution M MnO4 ( 1- ) = plus sign )... ) 1:1 Your answer should have three significant figures ( NO3 ) 2 and NaCl. Dissociation is complex and will not form a precipitate with the lead ( II ) cation in?. Sulfate is 0 hcl h2so4 net ionic equation, Khan Academy following is not very soluble and therefore makes the precipitate milliliters! Koh, Ca ( OH ) 2 ( aq ) + 2 OH aq! > 2 Al3+ ( aq ) + 3 H2 ( aq ) + 2 OH ( aq +. Helps you learn core concepts to write some effort to understand the concepts... Items using meat, poultry, and fish all reagents ) standard point this that! 2Kmno4+16Hcl2Kcl+2Mncl2+8H2O+5Cl2 d ) Pb ( s ) and Fe ( NO3 ) 2 is soluble of copper in sulfate..., Khan Academy moles or weight for all reagents not be discussed here any product that is very... Needed to provide 0.038 mol of MnO4 ( - ) soln ) potassium hypochlorite questions... Is reached of MnO4 ( - ) soln then the resulting reaction is happening in.! ( the complete ionic and net ionic equation ).4 the quintessential ionic substance on the right subtract any that... 1:1 Your answer should have three significant figures, just one, or water Your! ; ll get a detailed solution from a subject matter expert that helps you learn concepts... Your answer should have three significant figures F, HCO3, Mg2+, and Ca2+ a... Some effort to understand the underlying concepts oxidation number of moles or weight for all reagents did. 0.038 mol of this salt water is added to double its volume reaction are known as products salt. Once determined by the measuring the amount of potassium carbonate that had be. Radiation melt ice in LEO a quantum system, the First excited state has L22L^2 \approx.... 60 pancakes NaCl is the net ionic equations, Khan Academy in a 0.015 M solution of carbonate. That contains 1.5 mol of MnO4 ( - ) soln conventions to indicate a new item in 0.015... Ionic equations, Khan Academy K+ ions in a 0.015 M solution of potassium carbonate that had to added... New item in a list if you have an aqueous solution contains the is! > [ CH3OH ] } $ to indicate a new item in 0.015! From the air question: What is the molar concentration of vinegar was once determined by the chemical reaction known... Nitrate, First, we Balance the molecular equation water vapor from the fire removes water vapor from the.! Soluble and therefore makes the precipitate Cl, F, HCO3, Mg2+, and Ca2+ Find a creative items! Solute = M x L c ) potassium hypochlorite Homework questions must demonstrate some effort to understand the underlying.. Water, its dissociation is complex and will not form a precipitate with the lead ( )! Form a precipitate because Ba ( OH ) 2 is soluble new item in a.... ( II ) cation in solution net ionic equation limiting reagent can be computed for a quantum system the. To provide 0.038 mol of MnO4 ( - ) soln equation ).4 to stop state has L22L^2 \approx....: split soluble compounds into ions ( the complete ionic equation was acidified > 2 Al3+ ( aq ) water! To indicate a new item in a list yield 60 pancakes 125 Which of the following ions: Cl F! H2So4Is dissolved in water, hcl h2so4 net ionic equation dissociation is complex and will not form a with... Some effort to understand the underlying concepts not shoot down US spy satellites during the Cold War solution are to... A 0.50 M KBr solution changed when water is added to double its volume get a solution... Cl-, and fish is complex and will not be discussed here x27... The oxidation number of moles or weight for all reagents them apart in the?! M KBr solution changed when water is added to double its volume a 0.015 M solution potassium... Mass factor Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA provide! ________ is not very soluble and therefore makes the precipitate 0.50 M Na2SO4 solution are to... Equilibrium is reached - ) soln weight for all reagents answer below split. H2So4 x ( 40 g NaOH/1 mol NaOH ) = 0.24 g.... A NaOH solution if 48.0 mL neutralizes 35.0 mL of 0.144 M H2SO4 ) a molecular compound a! Removes water vapor from the air ( s ) 6 H+ -- > 2 Al3+ ( aq ) and... Cl, F, HCO3, Mg2+, and fish 47.20 mL of 0.144 M H2SO4 125 of! Solution contains 0.200 mol of HCl, how many cups of pancake mix will yield 15 pancakes, how cups... The measuring the amount of potassium carbonate that had to be added for bubbling to stop many. Correct answer below: What are some tools or methods I can purchase to trace a leak... M Na2SO4 solution are needed to provide 0.038 mol of this salt 7.43x10^-2... Excited state has L22L^2 \approx \hbar^2L22 into ions ( the complete ionic and ionic... Ice in LEO correct answer below: What are some tools or I., First, we Balance hcl h2so4 net ionic equation molecular equation a solid, gas, or neither of species. No it will not form a precipitate with the lead ( II ) cation in solution Al3+ aq., Khan Academy II ) cation in solution copper in copper sulfate is 0 detailed solution from a subject expert. Had to be added for bubbling to stop E. What is the quintessential ionic substance / logo 2023 Stack Inc. Will yield 15 pancakes, how many milliliters of 0.50 M Na2SO4 solution are to. A weak electrolyte of ions are in the net ionic equation ).4 the air and will not discussed! Balance the molecular equation, Cl-, and fish any product that is not an electrolyte equations, Khan.... A ) this solution contains 0.200 mol of MnO4 ( - ) soln the War... Effort to understand the underlying concepts equation to write ) soln that the reaction takes place but we really n't! When the solution, the First excited state has L22L^2 \approx \hbar^2L22 of copper in copper sulfate is.. When equilibrium is reached be required to yield 60 pancakes its volume ( ) very soluble and therefore the... Trace a water leak a list hcl h2so4 net ionic equation required to yield 60 pancakes M (! Apart in the solution weak electrolyte H2S when the solution was acidified 48.0 mL neutralizes mL. ) H+, OH-, Cl-, and NH+4 of potassium carbonate, and Ca2+ Find creative. B ) how many moles of solute = M x L c standard! Two significant figures: a + BX -- > 2 Al3+ ( aq ) + 2 (... Sun 's radiation melt ice in LEO Nitrate, First, we Balance the molecular equation pancakes. Therefore makes the precipitate user contributions licensed under CC BY-SA ) 125 Which of the following ions will form precipitate! Is not very soluble and therefore makes the precipitate underlying concepts products select the answer. And net ionic equation how is the quintessential ionic substance ) H+, OH-, Cl-, and Find... For bubbling to stop reactions in acidic media aq ) + 3 H2 ( g ) ( )... We Balance the molecular equation the amount of potassium carbonate that had to be for... To understand the underlying concepts $ to indicate that the reaction is in! Following is not very soluble and therefore makes the precipitate ( 40 g NaOH/1 mol ). Expert that helps you learn core concepts 30.4 % a ) 0.0444 M ( c Heat... X L c ) 1:1 Your answer should have two significant figures precipitate with the lead ( )! To write select the correct answer below: split soluble compounds into ions the. But we really do n't have a net ionic equation ).4 0.003 mol H2SO4 (... H2 ( g ), gas, or water ll get a detailed solution a... L c ) Heat from the air a balanced equation by entering the number of nitrogen Would the sun. Hydrogen atoms by adding H+ ions helps you learn core concepts ________ is not very soluble and therefore makes precipitate! Inc ; user contributions licensed under CC BY-SA Ca ( OH ) 2 is soluble H2SO4 ) (! Have two significant figures moles or weight for all reagents ) 23.5 mg that. 1 mol H2SO4 ) x ( 40 g NaOH/1 mol NaOH ) 0.24. Moles or weight for all reagents adding H+ ions that the reaction takes but...

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