Chapter 11 Stoichiometry Test Review

Stoichiometry is the study of the relationship between the amount of reactants used and the amount of products made in a chemical reaction.

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The mole ratio is a comparison of how many moles of one substance are required to participate in a chemical reaction with another substance, based on the balanced chemical equation.

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In a chemical reaction represented by the general equation A + B → C + D, there are four distinct mole ratios that can be written.

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The limiting reactant limits the amount of product formed in a chemical reaction.

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If 80.0 g of sodium reacts with 72.0 g of iron (III) oxide, sodium acts as the limiting reactant.

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In a balanced chemical equation, the total mass of the reactants is equal to the total mass of the products.

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In a balanced chemical equation, the total number of moles of all the reactants is equal to the total number of moles of all the products.

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The percent yield is the maximum amount of product that can be produced from a given amount of reactant.

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The excess reactant refers to the additional amount of a reactant in a chemical reaction that must be added in order for the reaction to proceed.

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The stoichiometric relationship between any two substances in a reaction depends on the mole ratio between those substances.

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