Theoretical and Percent Yield

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

• theoretical yield

• mole ratio

• actual yield

• percentage yield

Complete the equation for the percent yield of a chemical reaction:
Percent yield=(________)÷(________)×100%

• actual yield; theoretical yield

• theoretical yield; actual yield

Tags

NGSS.HS-PS1-7

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

• 90.4%

• 104%

• 96.15%

• 1.04%

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

• mole ratio

• rate of reaction

• percent yield

• energy released

Tags

NGSS.HS-PS1-5

The equation for Percent Yield:

• (theoretical/actual) X 100%

• (actual/theoretical) X 100%

• (actual - theoretical)/ theoretical X 100%

In a lab, a scientist calculates she should produce 12.3 grams of product in her experiment. When she is finished collecting the product it weighs 10.1 grams. What is the percent yield?

• 82%

• 0.82%

• 10.1 %

• 100%

LiOH + KCl → LiCl + KOH  If the theoretical yield of lithium chloride iss 35.4 g but we actually produced 6 grams of lithium chloride in the lab, what was our percent yield?

• 16.9%

• 5.91%

• 1.88%

• 12.3%

Tags

NGSS.HS-PS1-7

P₄ + 6Cl₂ --> 4PCl₃ 
The reaction of 75.0g P₄ with excess chlorine gas produces 110g PCl₃ in lab. Find the theoretical yield and calculate percent yield for the reaction. 

• 78%

• 64%

• 27%

• 33%

Tags

NGSS.HS-PS1-7

• 58.3

• 116

• 48

• 4128

Tags

NGSS.HS-PS1-7

• 34

• 68

• 93

• 24

Tags

NGSS.HS-PS1-7