DP Chemistry (last assessment 2024)

Question 20N.1.hl.TZ0.15

Date	November 2020	Marks available	[Maximum mark: 1]	Reference code	20N.1.hl.TZ0.15
Level	hl	Paper	1	Time zone	TZ0
Command term	Determine	Question number	15	Adapted from	N/A

15.

[Maximum mark: 1]

20N.1.hl.TZ0.15

Which statements about bond strength and activation energy are correct for this reaction?

${CH}_{4} (g) + 2 O_{2} (g) \to {CO}_{2} (g) + 2 H_{2} O (l)$ $∆ H^{⦵} = - 891 kJ$

[1]

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Examiners report

More than 60% could select relative bond strength of products and reactants in an exothermic reaction, and correctly apply the magnitude of activation energy between forward and reverse reactions for this.

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Core

Core » Topic 5: Energetics/thermochemistry » 5.3 Bond enthalpies

Core » Topic 5: Energetics/thermochemistry

Question 20N.1.hl.TZ0.15

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