Asked in PMC Practice Test 31 (2021) 2021

The efficiency of chemical reactions can be checked by calculating its _ yield.

Correct answer: A. Percentage

  • A. Percentage
  • B. Actual
  • C. Theoretical
  • D. Combination of all of these

Explanation

The actual yield is obtained from the reaction. Theoretical yield is calculated from a balanced chemical equation. And the efficiency of a reaction is determined by percentage yield which is " the ratio of actual yield to theoretical yield " multiplied by 100.

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About Theoretical and Percentage Yield

Theoretical yield is the maximum product predicted from a balanced equation and the amount of limiting reactant. Work includes identifying the limiting reagent, comparing theoretical and actual yield, and calculating percentage yield using stoichiometric mole relationships.

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