Question: Why does raising pressure help create more water from ice? Edit
Answer: With decrease the pressure, the freezing point of water will increase Suppose you are in temperature of 0 degree and holding a ice ball in your hand. Ice ball will not melt to water as the temperature of the environment is 0 degree. Now if you pressurize the ice ball by keeping it in between your two palm, the freezing point of ice ball decreases, suppose the freezing point decreases to -1 degree, but the environment temperature is still 0 degree and that is higher than current freezing point of ice ball so under this situation, your ice ball will melt to water.
Now the question is why with decrease the pressure, the freezing point of water will increase??
For that you have to study Phase diagram and triple point of water. Edit
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