From the thermochemical reactions, C(graphite)`+1//2O_(2)rarr CO , Delta H =-110.5`KJ `CO+1//2O_(2)rarr CO_(2),Delta H=-283.2` KJ the heat of reaction of C(graphite) `+O_(2)rarr CO_(2)` is :A. `-393.7 kJ`B. `+393.7 kJ`C. `-172.7 kJ`D. `+172.7 kJ`

From the thermochemical reactions, C(graphite)`+1//2O_(2)rarr CO , Del

1.	From the thermochemical reactions, C(graphite)`+1//2O_(2)rarr CO , Delta H =-110.5`KJ `CO+1//2O_(2)rarr CO_(2),Delta H=-283.2` KJ the heat of reaction of C(graphite) `+O_(2)rarr CO_(2)` is :A. `-393.7 kJ`B. `+393.7 kJ`C. `-172.7 kJ`D. `+172.7 kJ`
Answer» Correct Answer - A `DeltaH=H_(P)-H_(R)`

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From the thermochemical reactions, C(graphite)`+1//2O_(2)rarr CO , Delta H =-110.5`KJ `CO+1//2O_(2)rarr CO_(2),Delta H=-283.2` KJ the heat of reaction of C(graphite) `+O_(2)rarr CO_(2)` is :A. `-393.7 kJ`B. `+393.7 kJ`C. `-172.7 kJ`D. `+172.7 kJ`

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