試題詳解

17Which of the following is true?
(A) An increase of pressure always leads to a boiling point elevation for all substances.
(B) An increase of pressure always leads to a melting point depression for all substances.
(C) The slope of the solid-liquid coexistence curve in the P-T phase diagram is positive if the solid is less dense than the liquid.
(D) In the P-V phase diagram, the solid-liquid coexistence region is broader than the gas-liquid coexistence region.
(E) In the P-T phase diagram the Clausius-Clapeyron equation can be used to show that the slope of the solid-gas coexistence curve must be less than the slope of the liquid-gas coexistence curve near the triple point.