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6.2 Quantitative analysis

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Question 25

In a gas-processing plant, gas X changes into gas Y according to the equation

3X(g)→2Y(g)\mathrm{3X(g)\rightarrow2Y(g)}3X(g)→2Y(g)

A meter records that 30 dm3 of Y is collected when the reaction is complete. All gas volumes are measured at the same temperature and pressure.

What volume of X reacted?

[1]
A

45 dm345\,\mathrm{dm^3}45dm3

B

90 dm390\,\mathrm{dm^3}90dm3

C

15 dm315\,\mathrm{dm^3}15dm3

D

20 dm320\,\mathrm{dm^3}20dm3

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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