DP Chemistry (last assessment 2024)

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Question 22N.1.sl.TZ0.20

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.sl.TZ0.20
Level sl Paper 1 Time zone TZ0
Command term Deduce Question number 20 Adapted from N/A
20.
[Maximum mark: 1]
22N.1.sl.TZ0.20

Which species has the weakest conjugate base?


A.  HCl

B.  NH4+

C.  HCO3−

D.  H2O

[1]

Markscheme

A

Examiners report

48% of the candidates chose HCl as the species with the weakest conjugate base. This question had good discrimination between high-scoring and low-scoring candidates.

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