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Heat of formation of H2O(g) at 1 atm and...

Heat of formation of `H_2O(g)` at 1 atm and `25^@C` is -243 kJ. `triangleE` for the reaction, `H_2(g)+1/2O(g)rarrH_2O(g) at 25^@C` is

A

241.8 kJ

B

`-241.8 kJ`

C

`-243 kJ`

D

243 kJ

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • triangleH for the reaction, H(g)+H(g)rarrH_2(g) will be,

    A
    Zero
    B
    `+ve`
    C
    `-ve`
    D
    infinite

  • For the reaction, N_2(g)+3H_2(g)rarr2NH_3(g) , which is true:

    A
    `triangleH=triangleU`
    B
    `triangleHlttriangleU`
    C
    `triangleHgttriangleU`
    D
    None

  • K_p/K_c for the reaction: CO(g)+1/2O_2(g) hArr CO_2(g) is :

    A
    1
    B
    RT
    C
    1/(sqrtRT)
    D
    RT^(1/2)

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