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Chemical Engineering · Q431

Chemical Engineering Thermodynamics

Engineering and GATE · Chemical Engineering · question 431

Q431

Pick out the wrong statement.

A.
Enthalpies of all elements in their standard states are assumed to be zero
B.
Combustion reactions are never en-dothermic in nature
C.
Heat of reaction at constant volume is equal to the change in internal energy
D.
Claussius-clayperon equation is not applicable to melting process
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
Clausius–Clapeyron equation is used during the phase change process and since the melting is a phase change process we can use it during the melting.