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From the thermochemical reactions, C gra...

From the thermochemical reactions, `C_ graphite+1//2O_2=CO`, `triangleH=-110.5 kJ`
`CO+1//2O_2=CO_2,` `triangleH=-283.2 kJ`
`triangleH` for the reaction, `C_graphite+O_2=CO_2` is:

A

`-393.7 kJ`

B

`+393.7 kJ`

C

`-172.7 kJ`

D

`+172 .7 kJ`

Text Solution

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The correct Answer is:
A
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