Rank the following in the order of increasing entropy:
(a) 1 mole of H2O (l) at 25°C and 1 atm. Pressure.
(b) 2 mole of H2O (s) at 0°C and 1 atm. Pressure.
(c) 1 mole of H2O (v) at 100°C and 1 atm. Pressure.
(d) 1 mole of H2O (l) at 0°c and 1 atm. Pressure.
(b) < (d) < (a) < (c). This is because solid is less random than liquid which is turn is less random than gas. For the same state, at the same pressure, higher the temperature, greater is the randomness.