Given that when H2O (liquid) → H2 (gas)+ 1⁄2 O2 (gas) ΔH is + 285.8 kJ/mol and when H2 (gas)+ 1⁄2 O2 (gas)→ H2O (gas ) ΔH is -242.3 kJ/mol

Chemistry (M.Phil./Ph.D.) 2016 Panjab University Entrance Exam With Answers

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17.

The heat of conversion of 1 mol of H2O (liquid) to H2O (gas ) at constant pressure and temperature in kJ/mol will be

A: + 285.8

B: -242.3

C: + 43.5

D: + 528.1

The answer is: C

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