Chlorine gas can be made from the reaction of manganese(IV) oxide with hydrochloric acid:...
Question:
Chlorine gas can be made from the reaction of manganese(IV) oxide with hydrochloric acid: {eq}\rm MnO_2(s) + 4 HCl(aq) \to MnCl_2(aq) + 2 H_2O(l) + Cl_2(g) {/eq}
What is the limiting reagent when 28 g of MnO{eq}_2{/eq} are mixed with 42 g of HCl? (Molar masses: MnO{eq}_2{/eq} = 86.94 g/mol; HCl = 36.461 g/mol)
a. HCl
b. MnCl{eq}_2{/eq}
c. Cl{eq}_2{/eq}
d. MnO{eq}_2{/eq}
Limiting Reagent/Reactant:
The full amount of products that can be produced is mostly dependent on the amount of the limiting reactant, particularly its number of moles, in the chemical reaction process. The limiting reactant is the reactant that is in a stoichiometrically lesser amount than the other reactants and will be completely consumed during the reaction.
Answer and Explanation: 1
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Given:
mass of MnO{eq}_2{/eq}, {eq}m_{MnO_2}{/eq} = 28 g
mass of HCl, {eq}m_{HCl}{/eq} = 42 g
molecular weight of MnO{eq}_2{/eq}, {eq}MW_{MnO_2}...
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Limiting Reactants & Calculating Excess Reactants
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Chapter 9 / Lesson 5
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Learn how to find the limiting and excess reactants in a chemical reaction. See example problems that calculate the limiting and excess reactants.
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