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Question bank·5.1 Monitoring chemical reactions

5.1 Monitoring chemical reactions

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Question 52

H

A student mixes 20.0 $cm3\mathrm{cm^{3}}$ of a salt solution with a concentration of 50.0 $g/dm3\mathrm{g/dm^{3}}$ and 30.0 $cm3\mathrm{cm^{3}}$ of a solution of the same salt with a concentration of 10.0 $g/dm3\mathrm{g/dm^{3}}$ .

What is the concentration of the salt in the mixture?

[1]

A

13.0 $g/dm3\mathrm{g/dm^{3}}$

B

26.0 $g/dm3\mathrm{g/dm^{3}}$

C

30.0 $g/dm3\mathrm{g/dm^{3}}$

D

60.0 $g/dm3\mathrm{g/dm^{3}}$

Markscheme

5.1 Monitoring chemical reactions Questions

GCSE
Chemistry
5.1 Monitoring chemical reactions

152 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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