1.

If the heat of combustion of carbon monoxide at constant volume and at 17^(@)C is - 283.3 kJ, then its heat of combustion at constant pressure (R=8.314 J degree^(-1) mol^(-1)

Answer»

`- 284.5` KJ
284.5 kJ
384.5 kJ
`- 384.5 kJ`

Solution :`CO_((g))+(1)/(2)O_(2(g))rarrCO_(2(g)), Deltan=1-1(1)/(2)=-(1)/(2)`
`DeltaH=DeltaE+DeltanRT`
`DeltaH=-283.3-(1)/(2)XX(8.314)/(1000)xx290=-284.5 kJ`


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