Date | November 2014 | Marks available | 1 | Reference code | 14N.1.hl.TZ0.18 |
Level | HL | Paper | 1 | Time zone | TZ0 |
Command term | Question number | 18 | Adapted from | N/A |
Question
Consider the values of ΔHΘ and ΔSΘ À for the reaction of nitrogen with oxygen at 298 K.
N2(g)+O2(g)→2NO(g) ΔHΘ=+181 kJmol−1
ΔSΘ=+25 JK−1mol−1
Which statement is correct for this reaction?
A. ΔGΘ is positive at all temperatures.
B. ΔGΘ is negative at all temperatures.
C. ΔGΘ is positive at high temperatures.
D. ΔGΘ is positive at low temperatures.
Markscheme
D
Examiners report
[N/A]