Question

what happens to ice at high pressure​

Answer 1

Answer:

For most substances, increasing the pressure when a system is in equilibrium between liquid and solid phases will increase the phase transition temperature. Water is one of a few special substances for which the pressure lowers the temperature of transition.

So exceptionally water/ ice's melting point decreases with increase in pressure, which is if you press a ice cube in hand it will melt faster ( beware of the frost byte..if you are thinking that the heat of the palm is the cause then put the cube between 2 clamps Crossoverd).

Now the explanation can be through mr. la LeChatelier's principle

Which states ___” when a system is in equilibrium, any external changes that try to take it out of equilibrium (like applying pressure to ice) will cause the system to adjust in a way to counteract that change.”

It is more easy when you see it this way ..as we know water expands when turn to ice, so the ice kept under pressure gets more comfort achieving the most compact form of it which is the water so the equilibrium shifts right wards.(i. e. the production of right side be greater than production of left side)

Explanation:

Answer 2

if you increase the pressure on the ice the ice-water system wants to try to lower it again. It can do that by making itself fit into a smaller volume. But since water fills a smaller volume when it's liquid, rather than solid, it will go to a lower melting point -- allowing more solid to become liquid.