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Calculations involving masses

Calculations involving masses

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Question 56

An industrial chemist synthesizes ibuprofen in a multi-step pharmaceutical process.

The theoretical yield of ibuprofen for the final recrystallization step was calculated to be 245 mg. After drying, the chemist obtained 182 mg of pure ibuprofen.

Calculate the percentage yield of ibuprofen in this experiment.

Give your answer to two significant figures.

[3]
Markscheme

Calculations involving masses Questions

  1. GCSE
  2. /Chemistry
  3. /Calculations involving masses

258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.

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