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A substance can exists in two gaseous al...

A substance can exists in two gaseous allotropic forms `A` and `B`. If the equibrium mixture at `2500 K` consists of `80` mole percent `A` then calculate `|DeltaG_("reaction")^(@)|` at `2500 K` for `B(g) to A(g)`.
Express answer in `kcal`. Round off your anwer to next higher interger.

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