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Calculate the change in enthalpy for the...

Calculate the change in enthalpy for the following process at 1 atm
`H_(2)O(1, 50^(@)C) rarr H_(2)O (g, 150^(@)C)` given that `Delta H_(v)` at `100^(@)C` is `40.7 kJ mol^(-1)`
`C_(p)(H_(2)O, l) = 75.0 J mol^(-1)K^(-1)`
`C_(p)(H_(2)O, g) = 33.3 J mol^(-1)K^(-1)`

A

64.8 KJ

B

52.4 KJ

C

48.6 KJ

D

46.1 KJ

Text Solution

Verified by Experts

The correct Answer is:
D
`H_(2)0_((l))(50^(@)C)rarrH_(2)O_((l))(100^(@)C)rarrH_(2)O_((g))(150^(@)C)`
`DeltaH=DeltaH_(1)+DeltaH_(2)+DeltaH_(3)C_(P)=(DeltaH)/(T)`
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