Percent Yield

The ______________ yield is the maximum amount of product possible in a reaction. This determines the amount of product that should be produced in a perfect setting

• Percent
• actual
• stoichiometry
• theoretical

When reacting Na with Cl₂, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?

• 90.4%

• 104%

• 96.15%

• 1.04%

Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.

• 1.16%
• 116%
• 85%
• 76%

If a chemist calculates the maximum amount of product that could be obtained from a chemical reaction, he or she is calculating the

• Theoretical yield

• Mole ratio

• Actual yield

• Percentage yield

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

• Mole ratio

• Theoretical yield

• Percentage yield

• Actual yield

In a lab, a scientist calculated that he should produce 12.3 grams of product in his experiment. When he is finished collecting his product, it weighs 10.1 grams. What is his percent yield?

• 82.1%

• 0.82%

• 10.1%

• 122%

A chemist interested in the efficiency of a chemical reaction would calculate the

• Mole ratio

• Rate of reaction

• Percent yield

• Energy released

What is an excess reactant?

• Substance you end with

• Substance that determines the rate of reaction

• Substance that is not used up completely

• Substance that is used up completely

This is what you call a reactant that you have enough of. The one that DOES NOT run out.

• Limiting Reactant

• Excess Reactant

• Highly Reactant

• Super Reactant

A limiting reactant is a reactant that.....

• runs out during a chemical reaction

• causes a reaction to stop

• determines the amount of products that can be made

• all of these