In the reaction, H and S both are positive. The condition under which the reaction would not be spontaneous is -
1. H>TS
2. S=H/T
3. H=TS
4. All of the above
'The free energy change due to a reaction is zero when-
1. The reactants are initially mixed.
2. A catalyst is added
3. The system is at equilibrium
4. The reactants are completely consumed
18 g of ice is converted into water at 0C and 1 atm. The entropy of H2O(s) and H2O(l) are 38.2 and 60 J K-1 mol-1 respectively. the enthalpy for this conversion will be
(1) 5951.4 J/mol
(2) 595.14 J/mol
(3) -595.14 J/mol
(4) None of these
For a given reaction, H =35.5 kJ mol-1 and S = 83.6JK-1 mol-1. The reaction is spontaneous at:
(Assume that H and S do not vary with temperature)
1. | T < 425 K | 2. | T > 425 K |
3. | All temperatures | 4. | T > 298 K |
The correct thermodynamic conditions for the spontaneous reaction at all temperatures is