0654.C7.1.06 — Describe how to compare neutrality, relative acidity and relative alkalinity in terms of colour and pH using universal indicator: past paper questions

Real questions on 0654.c7.1.06 — describe how to compare neutrality, relative acidity and relative alkalinity in terms of colour and ph using universal indicator

The newest 9 of 7 written questions. Open one to see it on the real paper.

1. 0654/31 · May/June 2026 · Q8c(i)[1]

   Suggest the pH of dilute sulfuric acid.

   See it on the paper →
2. 0654/32 · May/June 2026 · Q8b(ii)[2]

   The pH of a sample of acid rain is determined using a pH meter. Describe another method for determining the pH of a sample of acid rain.

   See it on the paper →
3. 0654/33 · October/November 2024 · Q5a(iv)[2]

   Hydrogen chloride dissolves in water to make dilute hydrochloric acid. Describe one other way of finding the pH of dilute hydrochloric acid. The pH of the hydrochloric acid is found using a pH probe.

   See it on the paper →
4. 0654/32 · February/March 2021 · Q11a(i)[1]

   Table 11.1 shows information about three colourless liquids J, K and L. Complete Table 11.1 by inserting the pH for pure water. Table 11.1 liquid description pH J acid rain 4 K dilute sulfuric acid 2 L pure water

   See it on the paper →
5. 0654/32 · February/March 2021 · Q11a(iii)[1]

   Name the indicator used to find the pH of a liquid.

   See it on the paper →
6. 0654/12 · October/November 2019 · Q20[1]

   What are the pH values of solution X and of the neutral solution?

   See it on the paper →
7. 0654/33 · October/November 2019 · Q2d(iii)[1]

   Suggest a value of the pH of the solution in the beaker before any acid is added. pH =

   See it on the paper →
8. 0654/33 · May/June 2019 · Q5a(i)[1]

   The same salt is produced when the three substances named above react with dilute hydrochloric acid. Name this salt.

What examiners said

The pH of pure water was not well known. A common incorrect response was pH 0.

— Examiner report, February/March 2021, 0654/32 Q11(a)(i) (Cambridge)

Universal indicator was well known as the indicator used to find the pH of a liquid. Litmus paper was not accepted as it only indicates if a solution is acidic or alkaline. Using a pH meter was also not accepted.

— Examiner report, February/March 2021, 0654/32 Q11(a)(iii) (Cambridge)

The incorrect A was chosen more often than the correct answer, D. Candidates are required to know that solutions that react with acids are basic and have pH values greater than 7.

— Examiner report, October/November 2019, 0654/12 Q20 (Cambridge)