For most substances, the solid is more dense than the liquid. Sketch the phase diagram for such a substance, being sure to have the solid-liquid equilibrium line slope in the correct direction. Use Le Châtelier's principle to explain why the melting point of such a substance should increase with pressure. Select all that apply. O An decrease in pressure should favor the system with the lower volume, i.e. the solid. O If melting were to be accomplished at the lower pressure, it would require a temperature that is higher than the normal melting temperature. O An increase in pressure should favor the system with the lower volume, i.e. the solid. O If melting were to be accomplished at the higher pressure, it would require a temperature that is higher than the normal melting temperature. O If the substance is at its melting point at a pressure of one atmosphere, and then if the pressure were to be decreased, more solid would form at the expense of liquid - that is, more of the substance would freeze. O If the substance is at its melting point at a pressure of one atmosphere, and then if the pressure were to be increased, more solid would form at the expense of liquid - that is, more of the substance would freeze.

For most substances, the solid is more dense than the liquid. Sketch the phase diagram for such a substance, being sure to have the solid-liquid equilibrium line slope in the correct direction. Use Le Châtelier's principle to explain why the melting point of such a substance should increase with pressure. Select all that apply. O An decrease in pressure should favor the system with the lower volume, i.e. the solid. O If melting were to be accomplished at the lower pressure, it would require a temperature that is higher than the normal melting temperature. O An increase in pressure should favor the system with the lower volume, i.e. the solid. O If melting were to be accomplished at the higher pressure, it would require a temperature that is higher than the normal melting temperature. O If the substance is at its melting point at a pressure of one atmosphere, and then if the pressure were to be decreased, more solid would form at the expense of liquid - that is, more of the substance would freeze. O If the substance is at its melting point at a pressure of one atmosphere, and then if the pressure were to be increased, more solid would form at the expense of liquid - that is, more of the substance would freeze.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter9: Liquids, Solids, And Materials

Section: Chapter Questions

Problem IISP

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