For a reaction taking place in a container in equilibrium with its surroundings, the effect of temperature on its equilibrium constant in terms of change in entropy is described by
(A)With increase in temperature, the value of for exothermic reaction decreases because the entropy change of the system is positive
(B)With increase in temperature, the value of for endothermic reaction increases because unfavourable change in entropy of the surroundings decreasesCorrect
(C)With increase in temperature, the value of for endothermic reaction increases because the entropy change of the system is negative
(D)With increase in temperature, the value of for exothermic reaction decreases because favourable change in entropy of the surroundings decreasesCorrect
Answer: (B),(D)
Solution
. For an endothermic reaction is negative (unfavourable), and its magnitude decreases as rises, so the reaction becomes more favourable and increases: (B) true. For an
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