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On the basis of following thermochemical...

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

A

`-393kJ`

B

`-655kJ`

C

`393kJ`

D

`655kJ`

Text Solution

Verified by Experts

The correct Answer is:
A
`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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