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If DeltaH(f)^(@) for H(2)O(2) and H(2)O ...

If `DeltaH_(f)^(@)` for `H_(2)O_(2)` and `H_(2)O` are `-188` kJ/mole and `-286` kJ/mole, what will be the enthalpy change of the reaction `H_(2)O_(2) rarr H_(2)O+1/2 O_(2)`

A

`-196` KJ/mole

B

`-494` KJ/mole

C

146 KJ/mole

D

`-98` KJ/mole

Text Solution

Verified by Experts

The correct Answer is:
A
`H_(2)O_(2)rarrH_(2)O+(1)/(2)O_(2)" "DeltaH=H_(p)-H_(R)`
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