Practice Theoretical Yield And Percent Yield (5) - Stoichiometry - IB 10 Sciences (Group 4) – Chemistry

Practice: Theoretical Yield and Percent Yield

Lesson 5Stoichiometry

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define theoretical yield.
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Consider what factors determine the amount of product.
Question 2.
What formula is used to calculate percent yield?
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Remember to multiply by 100 to convert it to a percentage.
3Question 3.
What is theoretical yield?
- Actual yield in a reaction
- Maximum possible yield under perfect conditions
- Average yield achieved by chemists
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Think about what yield is measured against.
4Question 4.
True or False: Percent yield can be over 100%.
- True
- False
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Remember, what does a yield over 100% imply?
Question 5.
In a reaction, the theoretical yield of carbon dioxide is 250 g, but due to leaks and spills, the actual yield recorded is only 220 g. Calculate the percent yield and discuss factors that might have contributed to that outcome.
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Remember to use the percent yield formula.
Question 6.
If a chemist uses 5 grams of reactant A, and can theoretically produce 30 grams of product B, but after completing the reaction, only 27 grams of B is produced, calculate the percent yield and discuss potential reasons for the loss.
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Refer to factors that affect reaction yields.

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