Percent Yield and Limiting Reactant

Front

What is percent yield?

Back

Percent yield is the ratio of the actual yield of a product to the theoretical yield, expressed as a percentage. It indicates the efficiency of a reaction.

Front

Define theoretical yield.

Back

Theoretical yield is the maximum amount of product that can be produced from a given amount of reactants, based on stoichiometric calculations.

Front

What is a limiting reactant?

Back

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

Front

How do you calculate percent yield?

Back

Percent yield = (Actual Yield / Theoretical Yield) x 100%.

Front

What is the actual yield?

Back

Actual yield is the amount of product that is actually obtained from a chemical reaction, measured in grams.

Front

In the reaction LiOH + KCl → LiCl + KOH, if 20 grams of LiOH are used, what is the theoretical yield of LiCl?

Back

35.5 grams.

Front

In a reaction, if 200 g of silver nitrate and sodium phosphate are reacted, how much silver phosphate is produced?

Back

165 g.

Front

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, what are they calculating?

Back

Theoretical yield.

Front

In the reaction C10H8 + 12 O2 → 10 CO2 + 4 H2O, what is the limiting reactant if 12 moles of O2 reacts with 1.1 mole of C10H8?

Back

Oxygen.

Front

In the reaction SO2 + PCl5 → SOCl2 + POCl3, how much SOCl2 is produced when 16.2g SO2 reacts with 13.7g PCl5?

Back

7.87g.