The value of `Delta H` and `Delta S` for five different reaction are given below. `|{:("Reaction",Delta H(kJ mol^(-)),Delta S(JK^(-)mol^(-))),(I,+98.0,+14.8),(II,+55.5,+14.8),(III,+28.3,-84.8),(IV,-40.5,+24.6),(V,+34.7," 0.0"):}|` On the basis of these values, predict which one of these will be spontaneous at all temperature?A. Reaction `I`B. Reaction `II`C. Reaction `III`D. Reaction `IV`

The value of `Delta H` and `Delta S` for five different reaction are g

1.	The value of `Delta H` and `Delta S` for five different reaction are given below. `\|{:("Reaction",Delta H(kJ mol^(-)),Delta S(JK^(-)mol^(-))),(I,+98.0,+14.8),(II,+55.5,+14.8),(III,+28.3,-84.8),(IV,-40.5,+24.6),(V,+34.7," 0.0"):}\|` On the basis of these values, predict which one of these will be spontaneous at all temperature?A. Reaction `I`B. Reaction `II`C. Reaction `III`D. Reaction `IV`
Answer» Correct Answer - D For a reaction to be spontaneous at all temperatures `DeltaS` should be `+ve` and `DeltaH` should be `-ve` (both the factors must favour the process). Thus, only reaction `(IV)` will be spontaneous at all temperatures.

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