Yield Calculations in Chemistry

The video tutorial explains how to calculate actual yield, theoretical yield, and percent yield. It introduces key terms and provides examples using machines P and Q to illustrate percent yield calculations. The instructor shares a personal trick for calculating percent yield and demonstrates it with a hydrogen and oxygen reaction example. An advanced example involving the combustion of C3H8 is also covered, showing how to convert grams to moles and find the limiting reactant to calculate percent yield.

What is another term for actual yield?

• Practical yield

• Theoretical yield

• Calculated yield

• Expected yield

Which yield is also known as expected yield?

• Theoretical yield

• Practical yield

• Actual yield

• Experimental yield

If a machine produces 0.5 moles of product when 1 mole was expected, what is the percent yield?

• 100%

• 75%

• 50%

• 25%

Which machine would you choose based on yield efficiency?

• Machine Q with 25% yield

• Neither machine is efficient

• Machine P with 50% yield

• Both machines are equally efficient

In the reaction between hydrogen and oxygen, what is the limiting reactant if 1.5 moles of hydrogen and 2 moles of oxygen are used?

• Hydrogen

• Oxygen

• Water

• Both are limiting

What is the expected yield of water when 1.5 moles of hydrogen react with oxygen?

• 1.0 moles

• 0.8 moles

• 2.0 moles

• 1.5 moles

How do you calculate percent yield?

• Expected yield minus actual yield

• Actual yield plus expected yield

• Expected yield divided by actual yield times 100

• Actual yield divided by expected yield times 100

What is the percent yield if 0.8 moles of water are produced from an expected 1.5 moles?

• 53.33%

• 60%

• 66.67%

• 75%

In the combustion of propane, what is the theoretical yield of CO2 if 0.9 moles of propane are burned?

• 2.7 moles

• 1.25 moles

• 3.0 moles

• 0.9 moles

What is the percent yield of CO2 if 1.25 moles are produced from a theoretical yield of 2.7 moles?

• 60%

• 50%

• 55%

• 46.29%