Question

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

Answer 1

Hey friend!
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Here is your answer
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Ice at 273K or 0°C is more efficient in cooling as it does not have any hidden heat. Water at the same temperature has hidden heat, banned latent heat of fusion, which is used to convert water into ice. Thus, ice at 273 K is more effective in cooling
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HOPE THIS HELPS YOU :)

Answer 2

Hi Friend,

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.

As there is change in state in case of ice at 273 K, so more energy will be required, whereas in case of water at 273 K, there will be no change in phase. So, lesser energy will be taken from the surroundings.

Also, at same temperature of 273 K, large amount of heat will be removed by ice from the surroundings than in case of water.

Therefore, ice at 273 K is more effective in cooling than water at the same temperature.

Hope it helps!