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Get Answers to all your Questions
Why is ice at 0°C more effective in cooling than water at 0°C?
Answers (1)
Ice at 0°C is more effective in cooling than water at 0°C because of the latent heat of fusion.
Latent Heat of Fusion: This is the amount of heat required to convert 1 gram of ice at 0°C into water at 0°C without changing its temperature. For ice, this is approximately 334 joules per gram.
When you use ice at 0°C for cooling:
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It absorbs 334 J/g of heat energy just to melt into water at 0°C.
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After melting, it can still absorb more heat to rise above 0°C if needed.
In contrast, water at 0°C has already undergone melting, so it cannot absorb the latent heat. It can only absorb sensible heat (i.e., increase in temperature).
Therefore: Ice at 0°C absorbs more heat (due to latent heat) before its temperature rises, making it more effective in cooling than the same mass of water at 0°C.
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