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Date November 2014 Marks available 1 Reference code 14N.1.hl.TZ0.16
Level HL Paper 1 Time zone TZ0
Command term Question number 16 Adapted from N/A

Question

Which processes have a negative value for ΔSΘ?

I.     H2O(l)H2O(s)

II.     2H2O2(l)2H2O(l)+O2(g)

III.     2H2(g)+O2(g)2H2O(g)

A.     I and II only

B.     I and III only

C.     II and III only

D.     I, II and III

Markscheme

B

Examiners report

[N/A]

Syllabus sections

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