Why should we keep thermometer above surface of water while performing activity of latent heat of vaporization?

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Solution

Dear student

While determining the boiling point of water the bulb of the thermometer is kept above the surface of water, as steam contains only water vapour and the effect of any non-volatile impurity, if present in water, will be otherwise nullified.

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Why does latent heat not change the temperature of the thermometer when water is boiling at $100^{0} C$ ?

a. What is latent heat?

b. Discuss Latent heat of fusion of ice and Latent heat of vaporization of water.

Give the values for the latent heat of vaporization and latent heat of fusion of water?

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