1.

On the basis of following thermochemical equations H_(2)O(g)+C(s)toCO(g)+H_(2)(g),DeltaH=131kJ CO(g)+(1)/(2)O_(2)(g)toCO_(2)(g),DeltaH-282kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(g),DeltaH=-242kJ C(s)+O_(2)(g)toCO_(2)(g),DeltaH=X kJ:- The value of X will be

Answer»

`-393kJ`
`-655kJ`
`393kJ`
`655kJ`

SOLUTION :`H_(2)O(g)+C(S)toCO(g)+H_(2)(g)` . . . (1)
`CO(g)+(1)/(2)O_(2)(g) to CO_(2)(g)`. . . (2)
`H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O`. . . (3)
`C(S)+O_(2)(g) to CO_(2)(g)` . .(4)
Eq. (1)+ eq. (2) +eq. (3)=eq. (4) .


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