1.

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

Answer»

`-393.7 KJ`
`+393.7 kJ`
`-172.7 kJ`
`+172 .7 kJ`

ANSWER :A


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