At what temperature, reduction of lead oxide to lead by carbon i.e., PbO(s) +C(s) rarr Pb(s) + CO(s) becomes spontaneous. For the reaction , Delta Hand Delta S are 108.4 kJ mol^(-1) and 190.0 JK^(-1) mol^(-1) respectively.

At what temperature, reduction of lead oxide to lead by carbon i.e., P

1.	At what temperature, reduction of lead oxide to lead by carbon i.e., PbO(s) +C(s) rarr Pb(s) + CO(s) becomes spontaneous. For the reaction , Delta Hand Delta S are 108.4 kJ mol^(-1) and 190.0 JK^(-1) mol^(-1) respectively.
Answer» Solution :At equilibrium, `T = (DeltaH)/(DeltaS) = (108400 J MOL^(-1))/( 190 JK^(-1) mol^(_1)) = 570 . 5K` Above 570.5 K, `Delta G` will be `-ve` and the reaction will be spontaneous.