The standard enthalpics of formation of `CO,NO_(2)` and `CO_(2)` are `110.5 KJ mol^(-1), -33.2 KJ mol^(-1)` and `-393.5 KJ mol^(1)` respectively. The
The standard enthalpics of formation of `CO,NO_(2)` and `CO_(2)` are `110.5 KJ mol^(-1), -33.2 KJ mol^(-1)` and `-393.5 KJ mol^(1)` respectively. The standard enthalpy of the reaction
`4CO(g)+2NO_(2)(g)to4CO_(2)(g)+N_(2(g))+N_(2(g))` is
A. `-1065.6kJ`
B. `-200kJ`
C. `-700kJ`
D. `850kJ`
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Correct Answer - A
`DeltaH_(rxn)=4xx(-393.5)-4x(110.5)-2xx(33.2)`
`DeltaH_(rxn)=-1065.5KJ`
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