Question

Why is ice at 273 K more effective in cooling than water at the
same temperature?​

Answer 1

Answer:

At 273K the ice will give more cooling than water because it can absorb more heat than water due to its latent heat of fusion. To explain it further:- In case of ice at 273 K, it will first take heat (latent heat) from the medium to convert itself into water at 273 K and then into water at higher temperature.

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Answer 2

Ice at 273 K absorbs greater latent heat so that it can get converted into water without fusion. ice at 273 K more effective in cooling than water at same temperature