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5.1 Monitoring chemical reactions

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Question 16
H

A solution of sodium carbonate, Na2CO3\mathrm{Na_{2}CO_{3}}Na2​CO3​, has a concentration of 0.200 mol/dm3\mathrm{mol/dm^{3}}mol/dm3.

Relative atomic mass (ArA_rAr​): C = 12.0 O = 16.0 Na = 23.0

What is the concentration of the solution in g/dm3\mathrm{g/dm^{3}}g/dm3?

[1]
A

0.00189 g/dm3\mathrm{g/dm^{3}}g/dm3

B

16.6 g/dm3\mathrm{g/dm^{3}}g/dm3

C

21.2 g/dm3\mathrm{g/dm^{3}}g/dm3

D

530 g/dm3\mathrm{g/dm^{3}}g/dm3

Markscheme

5.1 Monitoring chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /5.1 Monitoring chemical reactions

57 exam-style questions on OCR GCSE Chemistry 5.1 Monitoring chemical reactions, covering 5.1.1 The technique of titration, 5.1.2 Theoretical mass, percentage yield and atom economy, 5.1.3 Concentration of a solution in mol/dm3, 5.1.4 Concentration calculations and titration results, 5.1.5 Molar gas volume and volumes of gases in reactions, and 5.1.6 Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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