Limiting Reagents and percent yield

Front

What is a limiting reactant?

Back

The reactant that determines how much product can be made.

Front

What is an excess reagent?

Back

The reactant that is not completely used up in a chemical reaction.

Front

What happens to the limiting reactant during a chemical reaction?

Back

It is used up first.

Front

When does a chemical reaction stop?

Back

When the limiting reactant is used up.

Front

In the reaction Cl₂ + 2 KBr → Br₂ + 2 KCl, what is produced?

Back

Potassium chloride (KCl) and bromine (Br₂).

Front

How do you determine the limiting reactant in a chemical reaction?

Back

By calculating the amount of product each reactant can produce and identifying the one that produces the least.

Front

What is percent yield?

Back

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

Front

How do you calculate percent yield?

Back

Percent yield = (actual yield / theoretical yield) × 100%.

Front

What is the theoretical yield?

Back

The maximum amount of product that can be produced from given amounts of reactants.

Front

What is the significance of the limiting reactant in a reaction?

Back

It determines the maximum amount of product that can be formed.