Question

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

Answer 1

Ice at 273K has less energy than water (although both at the same temperature). Water is having additional latent heat of fusion, hence at 273 K ice is more effective cooling than water.

Answer 2

Latent heat is the energy needed to change the state of a substance without altering its temperature. Specifically, it is the energy required to transition a substance from solid to liquid or from liquid to vapor while maintaining a constant temperature.

• The latent heat of fusion is the heat required to convert a solid to a liquid at constant temperature and pressure.
• The latent heat of vaporization is the heat needed to convert a liquid to vapor under the same conditions.

At 273 K, ice absorbs more heat than water from a substance to overcome its latent heat of fusion, resulting in a more effective cooling effect. Water, in contrast, does not absorb any additional heat. Therefore, ice is more effective at cooling than water at 273 K