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

 

Answer

Ice at 273K (or 0° C) is solid while water at 273K (or 0° C) is a liquid. 

When both the substances, at 273K, are used for cooling, ice is more effective than water. 

This is because ice is a solid when it absorbs heat, it is used for two things

  1. For changing its state from solid to water 
  2. To increase its temperature from 0°C / 273K

Whereas on the other hand, water is a liquid, when it absorbs heat it is used 

  1. To increase its temperature from 0°C / 273K

 

From the above two cases, we can conclude that ice at 0°C / 273K consumes more heat than water at 0°C / 273K. 

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

  1. Class 9
  2. Chapter 1 Class 9 - Matter In Our Surroundings

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.