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Question bank·5.1 Monitoring chemical reactions

5.1 Monitoring chemical reactions

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Question 71

H

A student does a titration. The table shows the student's results.

Titration	Rough	1	2	3	4
Titre ( $cm3\mathrm{cm^{3}}$ )	25.40	24.70	24.25	24.30	24.20

Which mean titre should the student use to calculate the concentration of the solution?

[1]

A

24.25 $cm3\mathrm{cm^{3}}$

B

24.36 $cm3\mathrm{cm^{3}}$

C

24.42 $cm3\mathrm{cm^{3}}$

D

24.57 $cm3\mathrm{cm^{3}}$

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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