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Question bank·5.1 Monitoring chemical reactions

5.1 Monitoring chemical reactions

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Question 21

A technician prepares an ammonium chloride solution, $NH4Cl\mathrm{NH_4Cl}$ , for a laboratory test. Each $dm3\mathrm{dm^3}$ of solution contains 10.7 g of ammonium chloride.

Relative atomic mass ( $A_r$ ): N = 14.0 H = 1.0 Cl = 35.5

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

[1]

A

0.212 $mol/dm3\mathrm{mol/dm^{3}}$

B

0.594 $mol/dm3\mathrm{mol/dm^{3}}$

C

0.200 $mol/dm3\mathrm{mol/dm^{3}}$

D

572 $mol/dm3\mathrm{mol/dm^{3}}$

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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