DP Chemistry (last assessment 2024)

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Question 20N.2.sl.TZ0.1c(i)

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.2.sl.TZ0.1c(i)
Level sl Paper 2 Time zone TZ0
Command term Outline Question number c(i) Adapted from N/A
c(i).
[Maximum mark: 1]
20N.2.sl.TZ0.1c(i)

Chlorine undergoes many reactions.

Chlorine gas reacts with water to produce hypochlorous acid and hydrochloric acid.

Cl2 (g)+H2O (l)⇌HClO (aq)+HCl (aq)

(c(i))

Hypochlorous acid is considered a weak acid. Outline what is meant by the term weak acid.

 

[1]

Markscheme

partially dissociates/ionizes «in water» ✔

Examiners report

A very well answered question - 80% of candidates understood what is meant by the term weak acid. Incorrect answers included 'acids that have high pH'.

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