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For the following reaction through stage...

For the following reaction through stages I, II and III
`A overset(I)(rarr)B overset(II)(rarr)C overset(III)(rarr)D`
quantity of the product formed (x) varies with temperature (T) as given. Select the correct statement.

A

Stages I and III are endothermic but II is exothermic.

B

Stages I and III are exothermic but II is endothermic

C

Stages II and III are exothermic but I is endothermic

D

Stage I is exothermic but stages II and III are endothermic.

Text Solution

Verified by Experts

The correct Answer is:
A
Stage I (A to B): The quantity of `B` is more than that of `A`. This means formation of `B` is favoured with increase in temperature `T`. Thus, stage I must be endothermic.
Stage II (B to C): The quenty of `C` is less than that of `B`. Thus, the formation of `C` is less favoured with an increase in temperature. Hence, stage II must be exothermic.
Stage III (C to D): Following the above statements stage III must be endothermic.
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