Some vapor pressures for H2O(l) are 4.258 torr at ‒1.00°C, 4.926 torr at 1.00°C, 733.24 torr at 99.00°C, and 787.57 torr at 101.00°C. (a) Calculate ΔHm, ΔSm, and ΔGm for the equilibrium vaporization of H2O(l) at 0°C and at 100°C. Explain why the calculated 100°C ΔvapHm value differs slightly from the true value, (b) Calculate ΔH° and ΔS° for vaporization of H2O(l) at 0°C; make reasonable approximations. The vapor pressure of water at 0°C is 4.58 torr.
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