Explain how the solid-liquid line in the phase diagram of water differs in chara

Question

Explain how the solid-liquid line in the phase diagram of water differs in character from the solid-liquid like in the phase diagrams of most other substances, such as CO2. Choose the best answer and explanation.

A) the solid-liquid line in the phase diagram of water has two branches, unline CO2 which only has one. This is due to the hydrogen bonding of water which is unique,

B) the solid-liquid line in the phase diagram of water is at different pressures and temperatures, but it is otherwise similar in character to that of Co2 and other substances. The weak intermolecular forces of water make the transition temperatures lower at all pressures,

C) the solid-liquid line in the water phase diagrame has a negatice slope, wheras for most other substances it has a positive slope. When pressure is applied, the higher density phrase is favored. In the case of water, the highest density phase is liquid water.

D) The solid-liquid line int he water phase diagram has a negative slope, whereas for most other substances it has a positive slope. This is due to the negative energy chance required for water, most other substances require a positive energy change to go from solid to liquid.

Explanation / Answer

C) the solid-liquid line in the water phase diagrame has a negatice slope, wheras for most other substances it has a positive slope. When pressure is applied, the higher density phrase is favored. In the case of water, the highest density phase is liquid water.

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