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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.
State-II (B to C) : The quantity 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 from above, stage-III must be endothermic.
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