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ZIMSEC O-Level Combined Science

7.2.2.2Concentration of solutions

Concentration of solutions in ZIMSEC O-Level Combined Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic20 practice questions1 lesson
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Overview

Forms 2 and 3.

Learning objectives

What the syllabus expects you to be able to do.

  1. 7.2.2.2.1Compare concentrations of coloured solutions by their colour intensity.
  2. 7.2.2.2.2Express concentration as the mass of solute in a given volume, in g/dm³ and mol/dm³.

Lessons

  • Concentration of solutions

    30 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Concentration of solutions: sample question

1 mark

5.0 g of salt is dissolved in water and the solution is made up to 200 cm³. Calculate the concentration of the solution in g/dm³.

Answer in g/dm³.

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