Question

. Water vapours have more energy than water at the same temperature.

Answer 1

Water vapor is water that is in the form of a vapor, or gas. It is a part of the watercycle. When liquid water is heated to boiling temperature, 100 degrees Celsius, it all turns into vapor. Water vapor can also be produced directly from ice; this is called sublimation.

Answer 2

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$\sf{\underline{\underline{The\:boiling\:point\:of\: water\:is\:373\:K.}}}$


At this temperature,

$\sf{\underline{Water\:vapours\:and\:liquid\:water\: coexist.}}$


In order to convert liquid water into vapours,

$\sf{\underline{\underline{Additional\:energy\:is\: required.}}}$


This additional energy which converts water at 373 K to steam is known as 'latent energy of vaporisation.'


$\sf{\underline{\underline{Hence,}}}$

The water vapours have a lot more heat energy than liquid water at the same temperature.


$\sf{\underline{Therefore,\:it\:is\:more\:effective\: in\:heating.}}$