Skip to content

Course home

Question bank·3.4 Using concentrations of solutions in mol/dm3
Sign up

3.4 Using concentrations of solutions in mol/dm3

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637
Question 15

A solution of sodium carbonate, Na2CO3\text{Na}_2\text{CO}_3Na2​CO3​, is diluted before it is analysed. A 10.0 cm3 sample of the original solution is diluted with water to make 50.0 cm3 of diluted solution. A 20.0 cm3 sample of the diluted solution is exactly neutralised by 18.0 cm3 of 0.0100 mol/dm3 hydrochloric acid.

The equation is:

Na2CO3+2HCl→2NaCl+H2O+CO2\text{Na}_2\text{CO}_3 + 2\text{HCl} \rightarrow 2\text{NaCl} + \text{H}_2\text{O} + \text{CO}_2Na2​CO3​+2HCl→2NaCl+H2​O+CO2​

Calculate the concentration of sodium carbonate in the original solution.

[4]
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.

More questions