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The equilibrium constant K for the react...

The equilibrium constant K for the reaction `2HI(g) hArr H_(2)(g)+I_(2)(g)` at room temperature is `2.85` and that at `698 K` is `1.4 xx10^(-2)`. This implies

A

Exothermic

B

Endothermic

C

Exergonic

D

Unpredictable

Text Solution

Verified by Experts

The correct Answer is:
A
With the increase of temperature, k value decreases, so the forward reaction decreases with increase of temperature. This implies that reaction will proceed in forward direction with decrease of temperature, i.e., heat is librated and hence forward reaction is exthoermic.
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