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The species which by definition has zero...

The species which by definition has zero standard molar enthalpy of formation at 298 K is

A

`Br_(2)(g)`

B

`Cl_(2)(g)`

C

`H_(2)O(g)`

D

`CH_(4)(g)`

Text Solution

Verified by Experts

The correct Answer is:
b
`Delta_(f)H^(@) = 0` for elementary substances in standard state . `Br_(2)`is liquid in standard state.
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