Percent Yield Review

CH₄  +  2O₂  →  CO₂  +  2H₂O
24 grams of CH₄ was added to the above reaction. Calculate the theoretical yield of CO₂.

• 66 grams
• 132 grams
• 33 grams
• 8.72

Tags

NGSS.HS-PS1-7

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 12.5 grams. Our actual yield was 13.0 grams. What is the percent yield?

• 100%
• 104%
• 96%
• 1.04

Tags

NGSS.HS-PS1-7

What does percent yield indicate?

• The amount of product we should get
• The efficiency of the lab
• The amount of product we actually got
• nothing

2Fe₂O₃ + C → Fe + 3CO₂

You add 28 grams of carbon. You find the actual yield to be 181.2 grams of CO₂. What is the percent yield of CO₂? (Hint: calculate theoretical yield of CO₂ first)

• 58.8%

• 209.2%

• 6435%

• 15.5

Tags

NGSS.HS-PS1-7

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

• 1.16%
• 116%
• 85%
• 76%

Percent yield = 100%
Theoretical yield = 88 grams
What is your actual yield?

• 88 grams
• 88%
• 100 grams
• 22%

Tags

NGSS.HS-PS1-7

Your percent yield is 80%. The actual amount of product produced was 29.1 grams. What is the theoretical yield?

• 25.2 grams
• 37.3 grams
• 37.1 grams
• 36.3 grams

Tags

NGSS.HS-PS1-7

Zn + 2HCl → ZnCl​₂ ​​+ H​₂​​
15 grams of HCl should theoretically produce 0.42 grams of H₂. The reaction actually produced 0.15 grams of H₂. What is the percent yield of H₂?

• 2.8%
• 280%
• 1%
• 36%

Tags

NGSS.HS-PS1-7

If 10.5g of Na₃N is decomposed, calculate the theoretical mass of sodium that should be produced. If only 2.84g of sodium is actually collected, what is the percent yield?

2Na₃N → 6Na + N₂

• 77%

• 65%

• 33%

• 54%

Tags

NGSS.HS-PS1-7