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3.4 Using concentrations of solutions in mol/dm3

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Question 8
H

A student added water to 100 cm3 of a solution of potassium nitrate and calculated the concentration of the solution after each addition of water.

The figure shows the student's results.

Figure: The concentration of the solution plotted against the total volume of the solution

image

a.

Use the figure to determine the concentration of the solution when the total volume of the solution is 250 cm3.

[1]
b.

Calculate the amount, in mol\text{mol}mol, of potassium nitrate in the solution at the start.

[2]
c.

Explain the shape of the curve.

[2]
Markscheme

3.4 Using concentrations of solutions in mol/dm3 Questions

  1. GCSE
  2. /Chemistry
  3. /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.

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