Question

Explain why steam at 100℃ is better for heating purpose than boiling water at 100℃?

Answer 1

Hey friend.... :-)

Here is your answer

Because steam at 100°C also have latent heat of boiling which it have acquired during conversion from liquid to gas and thus it have more energy then boiling water at 100°C. More heat available from steam at 100 deg. C. Steam while condensing gives out latent heat of evaporation.

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Answer 2

Steam at 100°C is better for heating purpose than boiling water at 100°C because :
behind this is the concept of latent heat of vaporization , latent heat of vaporization means the hidden heat in our surroundings which is taken by an object when it converts into gaseous state or vapors. This heat is taken by the object to overcome the force of attraction between it's molecules so that it can convert into gaseous state or vapours.
latent heat of vaporization is 22.5 * 10^5 joules per kg
boiling water at 100°C is going to take or hasn't taken the latent heat of vaporization whereas the steam at 100°C has already taken the latent heat of vaporization , this means it has 22.5 * 10^5 joules more heat energy than boiling water at 100°C.