Question

Explain why, steam at 100° C is better for heating purposes than boiling water at 100° C.

Answer 1

Due to latent heat of vapurization

Explanation:

Commercially steam is not available always but steam is a good heating source than water at 100°C .

• The difference between water and steam is the energy they have .
• Steam is obtained from water after supplying more heat.
• There is also a change of state between water and steam.Steam is usally gaseous state.
• The difference in energy between them is the latent heat of vapourization .This energy is dependent on the properties of the substance undergoing the change.
• This extra thermal energy for steam makes it better for heating purpose than boiling water at 100°C.

Answer 2

Steam has Latent Heat of Vaporization

Explanation:

• Steam has more energy than boiling water.
• It possesses the additional latent heat of vaporization.
• Therefore, steam at 1000°C is better for heating purposes than boiling water.  

A) Water is more conductive than steam. so causes more heating.

B) Steam has 5.4 times more energy, for the same weight than water.

So, Steam at 100°C is better for heating purposes than boiling water at 100°C