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Date November 2010 Marks available 1 Reference code 10N.1.hl.TZ0.16
Level HL Paper 1 Time zone TZ0
Command term Question number 16 Adapted from N/A

Question

Given the enthalpy change for the reaction below:

2H2(g)+O2(g)2H2O(l)ΔHΘ=572 kJ

which statement is correct?

A.     The standard enthalpy change of combustion of H2(g) is 286 kJmol1.

B.     The standard enthalpy change of combustion of H2(g) is +286 kJmol1.

C.     The standard enthalpy change of formation of H2O(l) is 572 kJmol1.

D.     The standard enthalpy change of formation of H2O(l) is +572 kJmol1.

Markscheme

A

Examiners report

[N/A]

Syllabus sections

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