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Why is ice at 273K more effective in cooling than water at the same temperature?😃
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Why is ice at 273K more effective in cooling than water at the same te...
Why is ice at 273K more effective in cooling than water at the same temperature?
Introduction: When it comes to cooling, ice at 273K (0°C) is more effective than water at the same temperature. This is an interesting phenomenon that can be explained by the following factors:
Latent heat of fusion:
Ice has a higher latent heat of fusion than water. This means that it takes more energy to melt a given amount of ice compared to the amount of energy required to raise the temperature of an equal amount of water. When ice is placed in contact with a warmer object, it absorbs heat from the object, causing the ice to melt. This process requires a lot of energy, which is taken from the object and results in a significant drop in temperature. On the other hand, when water is placed in contact with a warmer object, it absorbs heat and its temperature increases, but it does not undergo a phase change like ice. Thus, ice is more effective in cooling because it absorbs more heat energy per unit mass than water.
Specific heat capacity:
Ice has a lower specific heat capacity than water. This means that it takes less energy to raise the temperature of a given amount of ice compared to the amount of energy required to raise the temperature of an equal amount of water. When ice is placed in contact with a warmer object, it absorbs heat and undergoes a phase change to become water. However, the temperature of the water remains at 0°C until all the ice has melted. This means that the energy absorbed by the ice is used to melt it rather than to increase its temperature. On the other hand, when water is placed in contact with a warmer object, it absorbs heat and its temperature increases, but it does not undergo a phase change like ice. Thus, ice is more effective in cooling because it absorbs less heat energy per unit mass than water.
Contact area:
Ice has a larger contact area than water. When ice is placed in contact with a warmer object, it melts and spreads out over a larger surface area than water would. This increases the rate of heat transfer between the object and the ice, resulting in a faster cooling effect.
Conclusion:
In conclusion, ice at 273K is more effective in cooling than water at the same temperature because it has a higher latent heat of fusion, a lower specific heat capacity, and a larger contact area. These factors work together to ensure that ice absorbs more heat energy and cools faster than water when in contact with a warmer object.
Community Answer
Why is ice at 273K more effective in cooling than water at the same te...
Ice at 273k is more effective in cooling than water at 273k because in ice the molecules have lower energy as compared to the particles in water.It requires latent heat of fusion for melting and thus, can absorb more heat at the same temperature.
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Why is ice at 273K more effective in cooling than water at the same temperature?😃
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Why is ice at 273K more effective in cooling than water at the same temperature?😃 for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Why is ice at 273K more effective in cooling than water at the same temperature?😃 covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why is ice at 273K more effective in cooling than water at the same temperature?😃.
Why is ice at 273K more effective in cooling than water at the same temperature?😃 for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Why is ice at 273K more effective in cooling than water at the same temperature?😃 covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why is ice at 273K more effective in cooling than water at the same temperature?😃.
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