Experiment: to show the cooling effect of vaporizing ether

Materials: ether, glass tube, small wooden block, glass beaker

Method

• Place a small beaker over a few drops of water on a wooden block
• Pour about 10 cubic centimeters of ether into a baker and blow into it using a glass tube
• This encourages the ether to evaporate
• After a few minutes pick up the beaker

Observation and results

• The water forms an ice crust beneath the beaker
• The drops of water turn into ice
• This is because the ether requires latent in order to turn to gas form
• The ether takes up heat from the surrounding environment
• This concept is used in refrigerators

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