Course home

3.4 Using concentrations of solutions in mol/dm3

Easy Medium Hard

1 2 3 4 5 6 7 8 9 10 11 12 13

Question 5

A student made a solution of sodium carbonate, $Na2CO3\text{Na}_2\text{CO}_3$ .

Relative formula mass ( $M_r$ ): $Na2CO3=106\text{Na}_2\text{CO}_3 = 106$

The figure shows the flask the student used, filled to the graduation mark.

Figure: The volumetric flask used by the student, filled to the graduation mark

The student dissolved 5.30 g of sodium carbonate in water and made the solution up to the graduation mark.

Calculate the concentration of the solution in $mol/dm3\text{mol/dm}^3$ .

[3]

The student made a second solution by dissolving 5.30 g of sodium carbonate in water and making the solution up to 500 cm³.

Give the concentration of the second solution in $mol/dm3\text{mol/dm}^3$ .

[1]

Markscheme

3.4 Using concentrations of solutions in mol/dm3 Questions

GCSE
Chemistry
3.4 Using concentrations of solutions in mol/dm3

40 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.

Question bank