1.

Thermochemical reactionsC("graphite")+(1)/(2)O_(2)(g)rarrCO(g), DeltaH =- 110.5 kJ CO(g)+(1)/(2)O_(2)(g)rarrCO_(2)(g),DeltaH=-283.2 kJ From the above reaction, the heat of reaction for C(graphite) +O_(2)(g)rarrCO_(2)(g) will be

Answer»

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

Solution :EQ. (i) + eq. (II) gives the required RESULT.


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