12-92 Consider the liquid-vapor saturation curve of a pure substance on the P-T diagram. The magnitude of the slope of the tangent line to this curve at a temperature T (in Kelvin) is ( a) proportional to the enthalpy of vaporization hfg at that temperature. ( b) proportional to the temperature T. ( c) proportional to the square of the temperature T. ( d) proportional to the volume change vfg at that temperature. ( e) inversely proportional to the entropy change sfg at that temperature. | |
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