If % yield and actual yield is 80 and 20 g respectively, what will be theoretical yield?
- A. 20 g
- B. 25 g
- C. 30 g
- D. 40 g
Explanation
Rearranging the percentage yield formula, the theoretical yield is the actual yield multiplied by 100 and divided by the percentage, so 20 times 100 over 80 gives 25 g. The theoretical yield must always exceed the actual yield, so any answer of 20 g or less can be rejected immediately. This is the reverse of the earlier question in the same paper.
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