DP Chemistry (last assessment 2024)

Test builder »

Question 22M.1.hl.TZ2.15

Select a Test
Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1.hl.TZ2.15
Level hl Paper 1 Time zone TZ2
Command term Apply Question number 15 Adapted from N/A
15.
[Maximum mark: 1]
22M.1.hl.TZ2.15

What are the signs of ΔH and ΔS for a reaction that is non-spontaneous at low temperatures but spontaneous at high temperatures?

[1]

Markscheme

D

Examiners report

Two-thirds of the candidates related information about the spontaneity of a reaction at different temperatures to the signs of ΔH and ΔS correctly. This question discriminated well between high-scoring and low-scoring candidates.

Syllabus sections