DP Chemistry (first assessment 2025)

Question 22M.2.SL.TZ2.c(ii)

Date	May 2022	Marks available	[Maximum mark: 2]	Reference code	22M.2.SL.TZ2.c(ii)
Level	SL	Paper	2	Time zone	TZ2
Command term	State	Question number	c(ii)	Adapted from	N/A

c(ii).

[Maximum mark: 2]

22M.2.SL.TZ2.c(ii)

State the meaning of a strong Brønsted–Lowry acid.

[2]

Markscheme

fully ionizes/dissociates ✔

proton/H⁺ «donor » ✔

Examiners report

While a straightforward question, many candidates only answered part of the question - either focussing on the “strong” or on the “Brønsted-Lowry acid”. The average mark on this question was 1.2 out of 2 marks.

Syllabus sections

Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.1—Proton transfer reactions » Reactivity 3.1.1—Brønsted–Lowry acid is a proton donor and a Brønsted–Lowry base is a proton acceptor. Deduce the Br.nsted–Lowry acid and base in a reaction.

Question 22M.2.SL.TZ2.c(ii)

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