Consider a reaction where Delta S r Times n = -315 J/K and Delta H r Tims n = -4

Question

Consider a reaction where Delta S r Times n = -315 J/K and Delta H r Tims n = -45.6 KJ. Which is true about the spontaneity of this reaction? This reaction is nonspontaneous at 25degree C but will become spontaneous if the temperature is decreased to -130 degree C. This reaction is spontaneous at 25degree C, but will become nonspontaneous if the temperature is decreased to -130 degree C. Decreasing the temperature will have no effect on the spontaneity of the reaction. It is nonspontaneous at 25degree C and will become even less spontaneous as the temperature decreases. This reaction is nonspontaneous at 25degree C but will become spontaneous if the temperature is increased to 145degree C. Hints My Answers Give up Reiew Part

Explanation / Answer

Answer : B

At 250c :

?G=?H?T?S = 48.2kj/k which is positive means spontaneous at 250c

At -1300c ?G = -555j/k which is negative means nonspontaneous at -1300c

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