A solution contains 6.0 g of sodium chloride in 250 cm3 of solution. Calculate its concentration in g/dm3.
[3 marks]
Total for this question: 3
All calculations
Concentration in g/dm3
Quantitative chemistry
AQA 8462
ORIGINAL
concentration(g/dm3) = mass(g) / volume(dm3)
This concentration is mass per solution volume, so no moles or Mr are needed.
Board and spec code confirmed against AQA 8462 · registry checked 2026-07-17How this checking works
Work it, then mark it
Do each calculation on paper first, then reveal the mark scheme and tick the marks you actually earned — the same way you should mark past papers.
Q1
Do the calculation on paper first — then mark it.
Where the marks get lost
- Using 250 directly instead of converting cm3 to dm3.
- Using the solvent volume instead of the final solution volume.
Exam tip: For g/dm3, the top line is grams and the bottom line must be dm3.
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