alleryStart learning →Water vaporises at 373 K with ΔH = 41.00 kJ/mol. What is ΔU, taking R = 8.3 J/mol K?
A37.9 kJ/mol
B41.0 kJ/mol
C38.9 kJ/mol
D44.1 kJ/mol
Answer & Solution
Correct answer: A. 37.9 kJ/mol
With Δng = +1, ΔU = 41.00 - (8.3 x 373)/1000 = 41.00 - 3.10 = 37.9 kJ/mol.
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