The most appropriate response for a reaction that is spontaneous at all temperatures would be (a)...

The most appropriate response for a reaction that is spontaneous at all temperatures would be

(a) ΔHº = - ΔSº = +

(b) ΔHº = + ΔSº = -

(d) ΔHº = + ΔSº = +

Solutions

Expert Solution

Answer: (a)

A reaction will be spontaneous when it has a negetive free energy value. The change in free energy will have always negetive value when the reaction is exothermic (change in enthalpy, = negetive) with more disorder (change in entropy, = positive). This can be explained with the help of following equation.

The change in spontaneous nature of reaction with change in enthalpy and entropy is given below,

queen_honey_blossom answered 1 year ago

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