Module 10 Review: Stoichiometry

Front

What is the theoretical yield?

Back

The theoretical yield is the maximum possible amount of product from a reaction.

Front

What is a limiting reactant?

Back

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

Front

What is an excess reactant?

Back

An excess reactant is the substance that remains after a chemical reaction has completed.

Front

How do you determine the limiting reactant?

Back

To determine the limiting reactant, compare the mole ratio of the reactants used in the reaction to the mole ratio from the balanced equation.

Front

What is a mole ratio?

Back

A mole ratio is a ratio between the amounts in moles of any two compounds involved in a chemical reaction.

Front

What is the process to calculate theoretical yield?

Back

1. Find the limiting reactant. 2. Set up a mole ratio between the limiting reactant and the product. 3. Solve for unknown moles of product. 4. Convert to grams.

Front

When does a chemical reaction stop?

Back

A chemical reaction stops when the limiting reactant is used up.

Front

What is the mole ratio of Ba(OH)2 to AlPO4 in the reaction 2AlPO4 + 3Ba(OH)2 → 2Al(OH)3 + Ba3(PO4)2?

Back

3 mol Ba(OH)2 / 2 mol AlPO4.

Front

What is the actual yield?

Back

The actual yield is the amount of product obtained from a reaction, which is often less than the theoretical yield.

Front

What factors can affect the yield of a chemical reaction?

Back

Factors include incomplete reactions, side reactions, and measurement errors.