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The species which by definition has zero...

The species which by definition has zero standard molar enthalpy of formation at `298K` 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
`Cl_(2)` is gas at 298 K while `Br_(2)` is a liquid.
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Knowledge Check

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

    A
    `Br _(2)(g)`
    B
    `CI_(2)(g)`
    C
    `H_(2)O(g)`
    D
    `CH_(4)(g)`

  • The species which by definition has zero standard molar enthaly of formation at 298K is :

    A
    `CO_(2)(g)`
    B
    `H_(2)O(l)`
    C
    `O_(2)(g)`
    D
    `P_(4)(`red)

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

    A
    `Br_2(l)`
    B
    `Cl_2(g)`
    C
    `Hg(l)`
    D
    `I_2(g)`

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