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6.2 Quantitative analysis

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Question 9

A student prepares a pure, dry sample of sodium sulfate. The percentage yield is 80%.

Which pair of results could the student have recorded?

[1]
A

actual yield 15.0 g15.0\,\mathrm{g}15.0g, theoretical yield 18.0 g18.0\,\mathrm{g}18.0g

B

actual yield 3.20 g3.20\,\mathrm{g}3.20g, theoretical yield 40.0 g40.0\,\mathrm{g}40.0g

C

actual yield 24.0 g24.0\,\mathrm{g}24.0g, theoretical yield 30.0 g30.0\,\mathrm{g}30.0g

D

actual yield 12.8 g12.8\,\mathrm{g}12.8g, theoretical yield 20.0 g20.0\,\mathrm{g}20.0g

Markscheme

6.2 Quantitative analysis Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Quantitative analysis

151 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.

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