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What is the standard enthalpy change at 298 K for the following reaction?
`CO_(2) (g)+ C("diamond") rarr 2CO(g)`
Given : `DeltaH_(f)^(@)(CO,g) = - 110.5 kJ//mol : Delta H_(f)^(@)(CO_(2),g) = - -393.5 kJ//mol`
`Delta H_("transition")^(@)[C("graphite")rarr C("diamond")] = 2.0 kJ//mol`

A

`-172.5 kJ//mol`

B

`-170.5 kJ//mol`

C

`+172.5 kJ//mol`

D

`170.5 kJ//mol`

Text Solution

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The correct Answer is:
D
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