When water is heated at a temperature x by a process called P. And when steam gets reconverted at the same temperature into water and the process is called as Q.
(a) What is the temperature x in kelvin?
(b) what is the process P & Q known as?
(c) Name the energy released and absorbed during process P & Q respectively?

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Solution

water is heated at $373 k$ by boiling and converted to steam.
Steam is reconverted to water by condensation.
Energy released and absorbed during $P$ and $Q$ is called latent heat of vapourization.

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water is heated at 373k by boiling and converted to steam. Steam is reconverted to water by condensation. Energy released and absorbed during P and Q is called latent heat of vapourization.

water is heated at $373 k$ by boiling and converted to steam.
Steam is reconverted to water by condensation.
Energy released and absorbed during $P$ and $Q$ is called latent heat of vapourization.