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

For the following reaction through stages I, II and III `A overset(I)(

1.	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 endothermicC. Stages II and III are exothermic but I is endothermicD. Stage I is exothermic but stages II and III are endothermic.
Answer» Correct Answer - 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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