DP Chemistry (first assessment 2025)

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Question 21M.2.SL.TZ1.2b(i)

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.2.SL.TZ1.2b(i)
Level	SL	Paper	2	Time zone	TZ1
Command term	State	Question number	b(i)	Adapted from	N/A

b(i).

[Maximum mark: 1]

21M.2.SL.TZ1.2b(i)

(b(i))

State the formula of its conjugate base.

[1]

Markscheme

HS⁻ ✔

Syllabus sections

Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.1—Proton transfer reactions » Reactivity 3.1.2—A pair of species differing by a single proton is called a conjugate acid–base pair. Deduce the formula of the conjugate acid or base of any Br.nsted–Lowry base or acid.