Grade 12 Chemistry: Theoretical Yield
This worksheet helps Grade 12 students understand and calculate theoretical yield in chemical reactions, including limiting reactants and percentage yield.
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Theoretical Yield Worksheet
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Date:
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Read each question carefully and provide detailed answers. Show all your work for calculations.
1. The theoretical yield is always greater than or equal to the actual yield.
True
False
2. The limiting reactant determines the maximum amount of product that can be formed.
True
False
3. The amount of product actually obtained from a reaction is called the yield.
4. The reactant that is completely consumed in a chemical reaction is known as the reactant.
5. Consider the reaction: 2H₂(g) + O₂(g) → 2H₂O(l)
If 10.0 g of H₂ reacts with 50.0 g of O₂, calculate the theoretical yield of water in grams.
6. In an experiment, 25.0 g of calcium carbonate (CaCO₃) is heated to produce calcium oxide (CaO) and carbon dioxide (CO₂). The actual yield of CaO was 12.0 g.
a) Write the balanced chemical equation for this reaction.
b) Calculate the theoretical yield of CaO.
c) Calculate the percentage yield of CaO.
7. Which of the following factors can cause the actual yield to be less than the theoretical yield?
Impurities in reactants
Side reactions
Incomplete reactions
All of the above
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