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Delta H(1)^(@) for CO(2)(g), CO(g) and H...

`Delta H_(1)^(@)` for `CO_(2)(g)`, `CO(g)` and `H_(2)O(g)` are `-393.5,-110.5` and `-241.8 kJ mol^(-1)` respectively. Standard enthalpy change for the reacion
`CO_(2)(g)+H_(2)(g) rarr CO(g) + H_(2)O(g)` is

A

`524.1KJmol^(-1)`

B

`41.2KJmol^(-1)`

C

`-262.5KJmol^(-1)`

D

`-41.2KJmol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH^(@)_(reaction)=[DeltaH_(f)^(@)(CO)+DeltaH_(f)^(@)(H_(2)O)]-[DeltaH_(f)^(@)(CO_(2))`
`+DeltaH_(f)^(@)(H_(2))]`
`=[-110.0+(-241.8)]-[-395.5+0]=41.2KJ`
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