In which of the following reaction, reaction standard entropy change ( DeltaS^(@)) is positive and standardGibb's free energy change ( DeltaG^(@)) decreases sharply with increasing temperature?

In which of the following reaction, reaction standard entropy change (

1.	In which of the following reaction, reaction standard entropy change ( DeltaS^(@)) is positive and standardGibb's free energy change ( DeltaG^(@)) decreases sharply with increasing temperature?
Answer» C( graphite) `+ (1)/(2) O_(2)(g) rarrCO(g0` `CO(g) + (1)/(2) O_(2)(g)rarr CO(g)` `CO(g) + (1)/(2) O_(2)(g) rarr CO_(2)(g)` `MG(s) + (1)/(2) O_(2)(g) rarr MGO(s)` Solution :As reaction (a) isaccompanied by increase in the number o f MOLES of gaseous substances,entropy increases, i.e., `DeltaS^(@)= + ve`. ,brgt From the relation , `DELTAG^(@) = DeltaH^(@) - TDeltaS^(@)` ,as temperature increases,`T DeltaS^(@)` increases sharply andhence, `DeltaG^(@)` decreases sharply.