Multiple Choice
In a reaction, 0.50 mol of HCl is neutralized by NaOH according to the equation: HCl + NaOH → NaCl + H2O. How many moles of NaOH are required to react completely with the acid?
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3. Chemical Reactions
Stoichiometry
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Which of the following could NOT be used to determine reaction stoichiometry?
A
Mole ratios of reactants and products
B
Mass of reactants and products
C
Balanced chemical equation
D
Empirical formula of a single compound
Verified step by step guidance1
Understand that reaction stoichiometry involves the quantitative relationships between reactants and products in a chemical reaction.
Recognize that mole ratios of reactants and products, mass of reactants and products, and a balanced chemical equation all provide information about how substances relate to each other in a reaction, which is essential for stoichiometry.
Recall that the empirical formula of a single compound only gives the simplest whole-number ratio of atoms within that compound, but does not provide any information about how that compound reacts with others or the proportions in a chemical reaction.
Conclude that since the empirical formula does not describe the relationship between different reactants and products, it cannot be used to determine reaction stoichiometry.
Therefore, the empirical formula of a single compound is the correct choice for what could NOT be used to determine reaction stoichiometry.
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