Stoichiometry

Front

What is a Excess Reagent?

Back

The amount of a reactant that is not completely used up in a chemical reaction; it is what you have left over.

Front

What is the measured amount of a product obtained from a chemical reaction?

Back

Actual yield: the amount of product actually produced in a reaction.

Front

Calculate the grams of hydrogen produced from 120 g of Na in the reaction: 2Na + 2H2O → 2NaOH + H2.

Back

5.2 g of hydrogen are produced.

Front

In the reaction 2 CO (g) + O2(g) → 2 CO2(g), how many Liters of CO2 are produced by the reaction of 8 mols of O2 with excess CO?

Back

358.4 Liters of CO2 are produced.

Front

In the reaction Fe (s) + S (l) → FeS (s), if 7.62 g of Fe reacts with 8.67 g of S, how much FeS is formed?

Back

12.2 g of FeS is formed.

Front

What is Stoichiometry?

Back

The calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

Define Theoretical Yield.

Back

The maximum amount of product that could be formed from given amounts of reactants.

Front

What is Percentage Yield?

Back

The ratio of the actual yield to the theoretical yield, expressed as a percentage.

Front

What is a Limiting Reagent?

Back

The reactant that is completely consumed in a chemical reaction, limiting the amount of product formed.

Front

How do you calculate the mole ratio from a balanced equation?

Back

By using the coefficients of the reactants and products in the balanced chemical equation.