Concentrations of solutions

1 mark · Easy

Write the concentration, in words, for a solution described as 0.1 mol/dm³ sodium chloride.

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0.1 moles of sodium chloride per cubic decimetre

Also accept: 0.1 moles of sodium chloride per dm³; 0.1 mole of sodium chloride in each cubic decimetre; 0.1 moles per cubic decimetre

Common mistakes: Says 0.1 grams; Does not reference moles

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Marking points

B1 · 1 mark · States correctly as '0.1 moles sodium chloride per cubic decimetre' or equivalent.

Worked solution

This means there are 0.1 moles of sodium chloride dissolved in every cubic decimetre (dm³) of solution.