1.

Given, C graphite +(1)/(2)O_(2)=CO, DeltaH = -10.5 kj …(i) …(ii) CO+(1)/(2)O_(2)=CO_(2),DeltaH = 283.2 kj The heat of reaction of C graphite + O_(2) = CO_(2) is

Answer»

`+ 172.7 KJ`
`-393.7 kJ`
`-172.7 kJ`
`+393.7 kJ`

ANSWER :B


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