Percentage yield (Edexcel GCSE Chemistry): Quizzes

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3.3.1 Percentage Yield
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What does percentage yield compare?

Actual yield to theoretical yield

What is the 'actual yield' in a chemical reaction?

What you actually get from the reaction

What is the 'theoretical yield'?

The maximum amount you could get

Why might reversible reactions give less than 100% yield?

They don't go all the way to completion

What can happen to product during separation from the reaction mixture?

Some product might be lost

How might reactants react in unexpected ways?

Reacting with oxygen in air

What is the formula for percentage yield?

ActualTheoretical×100\frac{\text{Actual}}{\text{Theoretical}} \times 100

If actual yield is 6.256.25 g and theoretical yield is 8.58.5 g, what is the percentage yield?

73.5%73.5\%

Calculate percentage yield: actual = 44 g, theoretical = 55 g.

80%80\%

What does a percentage yield of 73.5%73.5\% mean?

73.5%73.5\% of reactants became product

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