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Date May 2009 Marks available 1 Reference code 09M.1.hl.TZ1.18
Level HL Paper 1 Time zone TZ1
Command term Solve Question number 18 Adapted from N/A

Question

A reaction has a standard enthalpy change, \(\Delta {H^\Theta }\), of \({\text{ +10.00 kJ}}\,{\text{mo}}{{\text{l}}^{ - 1}}\) at 298 K. The standard entropy change, \(\Delta {S^\Theta }\), for the same reaction is \({\text{ +10.00 J}}\,{{\text{K}}^{ - 1}}{\text{mo}}{{\text{l}}^{ - 1}}\). What is the value of \(\Delta {G^\Theta }\) for the reaction in \({\text{kJ}}\,{\text{mo}}{{\text{l}}^{ - 1}}\)?

A.     +9.75

B.     +7.02

C.     –240

D.     –2970

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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