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3.4 Using concentrations of solutions in mol/dm3

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Question 6

A chemist placed 20.0 cm3 of 0.180 mol/dm3 ammonia solution in a flask. The ammonia was completely neutralised after the addition of 30.0 cm3 of sulfuric acid.

The reaction is:

H2SO4+2NH3→(NH4)2SO4\text{H}_2\text{SO}_4 + 2\text{NH}_3 \rightarrow (\text{NH}_4)_2\text{SO}_4H2​SO4​+2NH3​→(NH4​)2​SO4​

Which value is the concentration of the sulfuric acid?

[1]
A

0.0600 mol/dm30.0600\ \text{mol/dm}^30.0600 mol/dm3

B

0.135 mol/dm30.135\ \text{mol/dm}^30.135 mol/dm3

C

0.240 mol/dm30.240\ \text{mol/dm}^30.240 mol/dm3

D

0.120 mol/dm30.120\ \text{mol/dm}^30.120 mol/dm3

Markscheme

3.4 Using concentrations of solutions in mol/dm3 Questions

  1. GCSE
  2. /Chemistry
  3. /3.4 Using concentrations of solutions in mol/dm3

106 exam-style questions on AQA GCSE Chemistry 3.4 Using concentrations of solutions in mol/dm3, covering 3.4.1 Concentration in mol/dm3. Each one has a worked solution and a mark scheme showing where the marks go.

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