Grade 9 Science: Actual Yield
This worksheet focuses on understanding and calculating actual yield in chemical reactions for Grade 9 science students.
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Actual Yield in Chemical Reactions
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Read each question carefully and provide your best answer. Show all your work for calculations.
In chemistry, the actual yield is the amount of product that is actually obtained from a chemical reaction. It is often less than the theoretical yield due to various factors.
1. What is the definition of actual yield?
The maximum amount of product that can be formed from given amounts of reactants.
The amount of product actually obtained from a chemical reaction.
The ratio of actual yield to theoretical yield, expressed as a percentage.
The amount of reactant consumed in a reaction.
2. Which of the following factors can lead to an actual yield being less than the theoretical yield?
Impurities in reactants
Side reactions
Loss of product during purification
All of the above
3. Actual yield is always than or to the theoretical yield.
4. The percentage yield is calculated by dividing the yield by the yield and multiplying by 100%.
5. A chemist performs a reaction and calculates a theoretical yield of 25.0 grams of product. After the experiment, they isolate 20.0 grams of the product. What is the actual yield?
6. Explain two reasons why the actual yield of a chemical reaction might be less than the theoretical yield.
7. The actual yield can sometimes be greater than the theoretical yield.
True
False