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Date	May 2009	Marks available	1	Reference code	09M.1.hl.TZ2.18
Level	HL	Paper	1	Time zone	TZ2
Command term	Deduce	Question number	18	Adapted from	N/A

Question

What is the standard entropy change, $\Delta {S^\Theta }$ , for the following reaction?

${\text{2CO(g)}} + {{\text{O}}_2}{\text{(g)}} \to {\text{2C}}{{\text{O}}_2}{\text{(g)}}$

M09/4/CHEMI/HPM/ENG/TZ2/18

A. –189

B. –173

C. +173

D. +189

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Syllabus sections

Additional higher level (AHL) » Topic 15: Energetics/thermochemistry » 15.2 Entropy and spontaneity

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