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Date May 2019 Marks available 1 Reference code 19M.1.sl.TZ1.14
Level SL Paper 1 Time zone TZ1
Command term Question number 14 Adapted from N/A

Question

What is the enthalpy change of reaction for the following equation?

A. x + y + z

B. −x − y + z

C. x − y − z

D. x − y + z

 

Markscheme

D

Examiners report

83 % of candidates answered this Hess Law question correctly. This topic was obviously well covered.

Syllabus sections

Core » Topic 5: Energetics/thermochemistry » 5.2 Hess’s Law
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