Answer : The correct option is, (C) limiting reactant
Explanation :
Excess reagent : It is defined as the reactants not completely used up in the reaction.
Limiting reagent : It is defined as the reactants completely used up in the reaction.
Theoretical yield : It is calculated from the amount of the limiting reagent present in the reaction.
Actual yield : It is experimentally determined.
From this we conclude that the limiting reactant determines the quantity that can be produced by the reaction.
Hence, the correct option is, (C) limiting reactant
