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6.2 Quantitative analysis

6.2 Quantitative analysis

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Question 18
H

0.60 g of magnesium is added to 50.0 cm350.0\,\mathrm{cm^{3}}50.0cm3 of 0.50 mol dm−30.50\,\mathrm{mol\,dm^{-3}}0.50moldm−3 hydrochloric acid:

Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)\mathrm{Mg(s) + 2HCl(aq) \rightarrow MgCl_{2}(aq) + H_{2}(g)}Mg(s)+2HCl(aq)→MgCl2​(aq)+H2​(g)

What volume of hydrogen forms at room temperature and pressure?

(Relative atomic mass: Mg = 24. One mole of any gas occupies 24 000 cm324\,000\,\mathrm{cm^{3}}24000cm3 at room temperature and pressure.)

[1]
A

150 cm3150\,\mathrm{cm^{3}}150cm3

B

300 cm3300\,\mathrm{cm^{3}}300cm3

C

600 cm3600\,\mathrm{cm^{3}}600cm3

D

1200 cm31200\,\mathrm{cm^{3}}1200cm3

Markscheme

6.2 Quantitative analysis Questions

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

157 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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