To make ice by the evaporation of ether

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To make ice by the evaporation of ether

A beaker about one-third full of ether is stood in a small pool of water on a of wood (Fig. 19.4). A current of air is then bubbled through the ether by rubber tube attached to bellows. The ether evaporates into the bubbles, and the vapour is carried quickly away as the bubbles rise to the surface and burst, thus increasing the rate of evaporation. The rapid change from the liquid to the vapour state requires latent heat. This comes from the internal energy of the liquid ether

To make ice by the evaporation of ether

To make ice by the evaporation of ether

itself, with the result that it soon cools well below 0 “C. At the same time heat becomes conducted through the walls of the beaker from the pool of water below it, and eventually the water cools to 0 “C. After this it begins to lose latent heat, and
freezes.

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To make ice by the evaporation of ether