At a certain temperature ‘T’, the endothermic reaction A---> B p

1.	At a certain temperature ‘T’, the endothermic reaction A---> B proceeds virtually to the end. Determine: (i) sign of ΔS for this reaction (ii) sign of ΔG for the reaction B-----> A at the temperature T, and (iii) the possibility of reaction B------> A proceeding at a low temperature.
Answer» (i) Energy factor opposes .So enthalpy factor must favour , i.e. ,ΔS must be positive. (ii) For A----> B , ΔG is –ve, therefore, for B----->A, ΔG will be +ve. (iii) For B-----> A, ΔH = - ve and ΔS is also –ve , i.e. ,Δs opposes the process but at low temp., TΔS may be so low that ΔH is greater in magnitude then TΔS and the process will be spontaneous.

At a certain temperature ‘T’, the endothermic reaction A---> B proceeds virtually to the end. Determine: (i) sign of ΔS for this reaction (ii) sign of ΔG for the reaction B-----> A at the temperature T, and (iii) the possibility of reaction B------> A proceeding at a low temperature.

Answer»

(i) Energy factor opposes .So enthalpy factor must favour , i.e. ,ΔS must be positive.

(ii) For A----> B , ΔG is –ve, therefore, for B----->A, ΔG will be +ve.

(iii) For B-----> A, ΔH = - ve and ΔS is also –ve , i.e. ,Δs opposes the process but at low temp., TΔS may be so low that ΔH is greater in magnitude then TΔS and the process will be spontaneous.

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At a certain temperature ‘T’, the endothermic reaction A---&gt; B proceeds virtually to the end. Determine: (i) sign of ΔS for this reaction (ii) sign of ΔG for the reaction B-----&gt; A at the temperature T, and (iii) the possibility of reaction B------&gt; A proceeding at a low temperature.

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At a certain temperature ‘T’, the endothermic reaction A---> B proceeds virtually to the end. Determine: (i) sign of ΔS for this reaction (ii) sign of ΔG for the reaction B-----> A at the temperature T, and (iii) the possibility of reaction B------> A proceeding at a low temperature.