1.

Heats of combustion diamond carbon and garphite carbon are respectively -395.4 KJ mol^(-1) and -393.5 KJ mol^(-1). Calculate the heat of transition of dimand carbon into garphite carbon.

Answer»

Solution :`C_(("diamond"))+O_(2)(G) to O_(2)(g) ,DeltaH=-395.4KJ....(1)`
`C_(("GRAPHITE"))+ O_(2)(g) to O_(2)(g) ,DeltaH=-395.4KJ....(2)`
EQUATION (1)-euation (2), GIVES `C_(("diamond"))toC_(("graphite")),DeltaH=-1.9KJ`
The heat TRANSITION of diamond carbon into graphite carbone =-1.9KJ.


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