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For the reaction H(2)(g) + I(2)(g)hArr2H...

For the reaction `H_(2)(g) + I_(2)(g)hArr2HI(g)K_(c) = 66.9` at `350^(@)C` and `K_(c) = 50.0` at `448^(@)C` . The reaction has

A

`Delta H = + ve`

B

`Delta H = - ve`

C

`Delta H = zero`

D

`Delta H =` Not found the signs

Text Solution

Verified by Experts

The correct Answer is:
B
K decreases as increase in temp. Hence exothermic `Delta H lt 0`
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