The Chemical Reaction During Low Current Discharge of a Simple

question 120

Multiple Choice

The chemical reaction during low current discharge of a simple "dry cell" involves:
(unbalanced) Zn + MnO₂ + NH₄Cl → ZnCl₂ + Mn₂O₃ + NH₃ + H₂O
What is the coefficient for zinc in the balanced equation that uses the lowest whole number ratios,and what is the limiting reagent for a process in which equal masses of reactants are mixed?

• A)coefficient 1 and limiting reagent Zn
• B)coefficient 2 and limiting reagent Zn
• C)coefficient 1 and limiting reagent MnO₂
• D)coefficient 2 and limiting reagent MnO₂
• E)coefficient 2 and limiting reagent NH₄Cl

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