Actual, Theoretical and Percent Yield

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

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

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)

• 15.8%
• 209.2%
• 6435%
• 15.5

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

Lead nitrate can be decomposed by heating.  What is the % yield of the decomposition reaction if 7.4g Pb(NO₃)₂ are heated to give 4.1 g PbO?
2Pb(NO₃)_{2 (s)}→2PbO_(s)+4NO_2(g)+O_2(g)

• 82%
• 44%
• 56%
• 67%

3. The reactant that is not completely used up in a chemical reaction is called the __________ .

• spectator reagent
• limiting reagent
• excess reagent
• catalyst

7. The amount of product that actually forms when a chemical reaction is carried out in a laboratory is called the _________ yield.

• actual
• theoretical
• percent

12.
C₃H₈ + 5 O₂ →3 CO₂ + 4 H₂O     
a)  If I start with 5 grams of C₃H₈, what is my theoretical yield of water?

• 8.2 grams
• 2.0 grams
• 11 grams
• 5.6 grams

If 5.2 grams of Mn(SO₄)₂ are actually formed in the lab, what is the percent yield?

The calculated number of grams for Mn(SO₄)₂ is 6.30 grams

• 37%

• 48%

• 53%

• 83%