Exploring Percent Yield in Chemistry

What is the definition of actual yield in a chemical experiment?

• The predicted product amount based on stoichiometry

• The amount of reactant used in the experiment

• The actual amount of product formed in the lab

• The maximum product amount calculated theoretically

What does theoretical yield represent in a chemistry experiment?

• The amount of reactant used

• The maximum possible amount of product based on calculations

• The minimum possible amount of product expected

• The actual amount of product obtained

Can the actual yield be greater than the theoretical yield?

• No, because calculations are always accurate

• Yes, due to contamination or errors

• No, it is not scientifically possible

• Yes, due to experimental errors

What is the formula for calculating percent yield?

• (Actual Yield - Theoretical Yield) x 100

• (Theoretical Yield / Actual Yield) x 100

• (Theoretical Yield - Actual Yield) x 100

• (Actual Yield / Theoretical Yield) x 100

In the reaction between potassium chromate and silver nitrate, what type of reaction occurs?

• Single replacement

• Double replacement

• Decomposition

• Synthesis

What is the first step in solving a stoichiometry problem in the given example?

• Convert grams to moles

• Calculate the molar mass of reactants

• Measure the reactants

• Predict the product using a balanced equation

How do you convert grams of a substance to moles?

• Divide by the molar mass

• Divide by Avogadro's number

• Multiply by Avogadro's number

• Multiply by the molar mass

What is the theoretical yield of silver chromate in the example if perfectly conducted?

• 0.550 grams

• 0.500 grams

• 0.488 grams

• 0.455 grams

How is percent yield calculated from actual and theoretical yields?

• (Theoretical Yield / Actual Yield) x 100

• Actual Yield - Theoretical Yield

• (Actual Yield / Theoretical Yield) x 100

• Theoretical Yield - Actual Yield

What does a percent yield of over 100% indicate?

• Possible errors or contamination

• Perfect experimental procedure

• Inaccurate theoretical prediction

• Insufficient reactants