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3.3 Yield and atom economy of chemical reactions

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Question 13

A manufacturer uses a batch reaction to make a liquid fragrance compound. The mass of fragrance compound collected is less than the maximum theoretical mass.

Which statement gives a possible explanation for the shortfall in fragrance compound?

[1]
A

The maximum mass was predicted using the balanced equation.

B

The reaction pathway had a high percentage atom economy.

C

Some reactants formed unwanted substances instead of the fragrance compound.

D

The reactant masses were converted into moles during the calculation.

Markscheme

3.3 Yield and atom economy of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Yield and atom economy of chemical reactions

104 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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