Question

(iv) High pressure on ice:

(a) Freezes Ice (b) Increases its melting point

(c) Does not effect melting point (d) Lowers its melting point​

Answer 1

Answer:

Under high pressure, water shows an unusual freezing point depression to −22°C at 210 MPa. In addition to the conventional ice I, various solid phases with a higher density than liquid water (ice II to ice V) exist in the pressure range between 210 and 500 MPa, as visualized in Fig.

increases it's melting point.

Explanation:

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Answer 2

Answer:

b) Increases its melting point

Explanation:

Ice VII is the only disordered phase of ice that can be ordered by simple cooling, and it forms (ordered) ice VIII below 273 K up to ~8 GPa. ... In high pressure ices, protonic diffusion (movement of protons around the oxygen lattice) dominates molecular diffusion, an effect which has been measured directly.

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