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I4-35. Lowering The Freezing Point Of Water Using Salt
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I4-35. Lowering The Freezing Point Of Water Using Salt
Purpose
To demonstrate that the freezing point of water can be reduced by putting ice in a salt water bath.
Equipment
Beaker with icewater, salt (NaCl), digital thermometer.
Setup Time
5 minutes.
Images
Description
The temperature of an ice and water mixture is measured with a digital thermometer. Adding salt to the icewater mixture reduces its temperature. The thermometer can be used to stir the mixture. By this technique the freezing point can be lowered as much as 15 degrees celcius.
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See pagesi1. thermal properties of matter
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See pagesi2. transfer of heat
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See pagesi3. gases
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See pagesi4. changes of state
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See pagesi5. laws of thermodynamics
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See pagesi1. thermal properties of matter
-
See pagesi2. transfer of heat
-
See pagesi3. gases
-
See pagesi4. changes of state
-
See pagesi5. laws of thermodynamics
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Physics Lab Demos