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Acids, bases and titration — Question 26

QCAA 2022, Paper 1 · 4 marks

Q26 · 2022 · Paper 1Unclassified4 marks

QUESTION 26 (4 marks)

Three unknown 0.1 M solutions, A, B and C, are found to have the following properties.

Solution

[H+] (mol L-1)

pH

pOH

A

0.0001

10.0

B

2.0

C

0.063

a) Determine the pH of solution A.

[1 mark]

Chemistry question figure

b) Determine the concentration of hydrogen ions [H+] in solution B.

[1 mark]

Chemistry question figure

c) Calculate the pOH of solution C. Show your working.

[2 marks]

Chemistry question figure

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