Calculating Percent Error and Yield

The video tutorial covers the concepts of percent error and percent yield in stoichiometry. It explains the definitions and formulas for calculating these values, using theoretical and actual yields. Two example problems are solved: one involving methane and oxygen, and another with potassium iodide and chlorine. The video concludes with a summary and offers additional resources for further learning.

What is the formula for calculating percent yield?

• Theoretical yield divided by actual yield times 100

• Theoretical yield minus actual yield divided by theoretical yield times 100

• Actual yield divided by theoretical yield times 100

• Actual yield minus theoretical yield divided by actual yield times 100

How do you calculate percent error?

• Theoretical yield divided by actual yield times 100

• Absolute value of theoretical yield minus actual yield divided by theoretical yield times 100

• Actual yield divided by theoretical yield times 100

• Absolute value of actual yield minus theoretical yield divided by actual yield times 100

Tags

CCSS.7.SP.A.2

What does theoretical yield represent?

• The amount of product you actually make in an experiment

• The amount of product lost during an experiment

• The amount of product you could make under perfect conditions

• The amount of reactants used in an experiment

What is an example of actual yield in a real-world scenario?

• The amount of cake you actually bake

• The amount of cake batter that spills while transferring to the pan

• The amount of ingredients you buy from the store

• The amount of flour you have before baking a cake

In the first practice problem, what is the theoretical yield of carbon dioxide?

• 75.4 grams

• 13.2 grams

• 36.2 grams

• 27.3 grams

In the first practice problem, what is the actual yield of carbon dioxide?

• 36.2 grams

• 27.3 grams

• 13.2 grams

• 75.4 grams

What is the percent yield in the first practice problem?

• 24.6%

• 27.3%

• 75.4%

• 36.2%

In the second practice problem, what is the theoretical yield of potassium chloride?

• 10.1 grams

• 45.8 grams

• 102 grams

• 22.1 grams

In the second practice problem, what is the actual yield of potassium chloride?

• 10.1 grams

• 45.8 grams

• 102 grams

• 22.1 grams

What is the percent error in the second practice problem?

• 45.8%

• 22.1%

• 10.1%

• 77.9%

Tags

CCSS.6.RP.A.3C