DP Chemistry (last assessment 2024)

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Question 18M.1.hl.TZ1.17

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.hl.TZ1.17
Level hl Paper 1 Time zone TZ1
Command term Identify Question number 17 Adapted from N/A
17.
[Maximum mark: 1]
18M.1.hl.TZ1.17

Which statement is correct?

A.     If ΔH < 0, reaction is always spontaneous.

B.     If ΔH > 0, reaction is never spontaneous.

C.     If ΔS < 0, reaction can be spontaneous if temperature is low enough.

D.     If ΔS < 0, reaction can be spontaneous if temperature is high enough.

[1]

Markscheme

C

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