Percent Yield

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%

Tags

NGSS.HS-PS1-7

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

What does percent yield indicate?

• The mass of product that should be obtained

• How quickly the reaction is completed

• The product of product actually obtained

• The efficiency of the chemical reaction

A chemical reaction was carried out where a yield of 73g was expected, but a yield of 62g was obtained. Calculate the percent yield.

• 85%

• 118%

• 84.9%

• 11%

2Fe₂O₃ + C → Fe + 3CO₂. You add 28.0 grams of carbon. You find the actual yield to be 181.2 grams of CO₂. What is the percent yield of CO₂?

• 209%

• 15.8%

• 6435%

• 16%

P₄ + 6Cl₂ --> 4PCl₃

The reaction of 75.0g P₄ with excess chlorine gas produces 110g PCl₃ in lab. Calculate percent yield for the reaction.

• 78%

• 64%

• 33%

• 27%

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

2Fe₂O₃ + 3C → 4Fe + 3CO₂. You add 28 grams of carbon. You find the actual yield to be 81.2 grams of CO₂. What is the percent yield of CO₂? (Hint: calculate theoretical yield of CO₂ first)

• 58.83%

• 308%

• 6435%

• 79.14%

Tags

NGSS.HS-PS1-7

In a chemical reaction, the theoretical yield of a product is calculated to be 50 grams. If the actual yield obtained from the experiment is 45 grams, what is the percent yield?

• A) 90%

• B) 95%

• C) 85%

• D) 80%