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Science · Grades 10–12

Molar concentration

Use solution volume in litres when the answer is in mol/L.

Make a worksheet

The key idea

Use solution volume in litres when the answer is in mol/L.

c = n/V

Worked examples

A solution contains 8 mol of solute in a final solution volume of 10 L. Find concentration in mol/L as a fraction or decimal.

8/10 = 4/5

4/5 mol/L

A solution contains 24 mol of solute in a final solution volume of 19 L. Find concentration in mol/L as a fraction or decimal.

24/19 = 24/19

24/19 mol/L

Try it yourself

  1. A solution contains 33 mol of solute in a final solution volume of 6 L. Find concentration in mol/L as a fraction or decimal.

  2. A solution contains 19 mol of solute in a final solution volume of 3 L. Find concentration in mol/L as a fraction or decimal.

Check your understanding

Answers and marking notes
  1. 11/2 mol/L

    33/6 = 11/2

  2. 19/3 mol/L

    19/3 = 19/3

Further reading and review references

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Learning preview · teacher review required. Grade bands are approximate, not official curriculum alignment.