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If DeltaH(f)(X), DeltaH(f)(Y), DeltaH(f)...

If `DeltaH_(f)(X)`, `DeltaH_(f)(Y)`, `DeltaH_(f)(R )` and `DeltaH_(f)(S)` denote the enthalpies of formation of `X`, `Y`, `R` and `S` respectively, the enthalpy of the reaction `X+YtoR+S` is given by

A

` DeltaH_(f)(X)+DeltaH_(f)(Y)`

B

` DeltaH_(f)(R)+DeltaH_(f)(S)`

C

` DeltaH_(f)(X)+DeltaH_(f)(Y)-DeltaH_(f)(R)-DeltaH_(f)(S)`

D

` DeltaH_(f)(S)+DeltaH_(f)(R)-DeltaH_(f)(X)-DeltaH_(f)(Y)`

Text Solution

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The correct Answer is:
D
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