Limiting Reactant, Theoretical, Actual, and Percent Yield

Front

What is the theoretical yield?

Back

The maximum amount of product possible in a reaction, assuming complete conversion of reactants.

Front

How do you calculate percent yield?

Back

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

Front

What is a limiting reactant?

Back

Any reactant that is used up first in a chemical reaction, limiting the amount of product formed.

Front

What does actual yield refer to?

Back

The amount of product actually obtained from a chemical reaction.

Front

What is percent yield?

Back

A measure of the efficiency of a chemical reaction, calculated as the ratio of actual yield to theoretical yield.

Front

In the reaction C3H8 + 5 O2 → 3 CO2 + 4 H2O, if you start with 5 grams of C3H8, what is the theoretical yield of water?

Back

8.2 grams.

Front

If the theoretical yield of a reaction is 13 grams and the actual yield is 12.5 grams, what is the percent yield?

Back

96.15%.

Front

What is stoichiometry?

Back

The calculation of reactants and products in chemical reactions based on balanced equations.

Front

What does it mean if a reaction has a percent yield greater than 100%?

Back

It indicates an error in measurement or calculation, as yields cannot exceed 100%.

Front

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

Back

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