Percent Yield & Limiting Reactants

What is the formula for 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

Which of the following do you get through measuring its mass? (No calculations)

• percent yield
• theoretical yield
• actual yield
• limiting reagent

Tags

NGSS.HS-PS1-7

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

• 1.16%
• 116%
• 85%
• 76%

Tags

NGSS.HS-PS1-7

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%

Tags

NGSS.HS-PS1-7

In a lab, a scientist calculate 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%
• 0.82%
• 10.1 %
• 100%

Tags

NGSS.HS-PS1-7

The theoretical yield of a reaction is 237 grams, but the reaction actually yields 26 less grams than expected. What is the percent yield?

• 17.6%

• 82.4%

• 89.0%

• 121.3%

Tags

NGSS.HS-PS1-7

Which of the following describes a limiting reactant?

• The reactant that is not completely consumed during a reaction

• None of this reactant is left over after the reaction take place

• The reactant that is completely consumed during the reaction

• Some of this reaction is left over after the reaction

Which of the following describes an excess reactant?

• The reactant that is not completely consumed during a reaction

• None of this reactant is left over after the reaction take place

• The reactant that is completely consumed during the reaction

• Some of this reaction is left over after the reaction

Tags

NGSS.HS-PS1-7

Identify the limiting and excess reactants in the reaction shown.

• N₂ is limiting and H₂ is excess. 

• H₂ is limiting and N₂ is excess. 

• NH₃ is both limiting and excess.

• There is no limiting reactant. 

Tags

NGSS.HS-PS1-7