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A gaseous reaction A(g) hArrB(g) is at ...

A gaseous reaction `A(g) hArrB(g)` is at equilibrium under standard condition and 200 K. Calculate the equilibrium constant of the reaction at 400 K if `DeltaS_("reaction")^(@)=6xx10^(-5) T^(2) cal//K`, where T is temperature in kelvin. [Given : R = `2 cal//mol K " and " "In " 2=0.7`]

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