DP Chemistry (last assessment 2024)

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Question 21M.2.sl.TZ1.2b(iii)

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

Iron (II) sulfide reacts with hydrochloric acid to form hydrogen sulfide, H2S.

In aqueous solution, hydrogen sulfide acts as an acid.

(b(iii))

Calculate the hydroxide ion concentration in saturated aqueous hydrogen sulfide.

[1]

Markscheme

10−10 «mol dm−3» ✔

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