Question

1. Discuss the various factors which affect the rate of evaporation. 2. Latent heat of evaporation of two liquids A and B is 100 J/kg and 150 J/kg respectively. Which one can produce more cooling effect and why?

Answer 1

hlo mate here is ur ans...

1)    Temperature: The greater the temperature of the liquid and its surroundings, the faster the rate of evaporation.

   Surface area occupied by the liquid: Since evaporation is a surface phenomenon, the greater the surface area occupied by the liquid, the quicker it undergoes evaporation.

   Humidity of the surroundings: The greater the humidity of the atmosphere surrounding the water, the slower the rate of evaporation.

   Air circulation or wind speed: The presence of a breeze or another source of air circulation directly contributes towards the rate of evaporation.

2)Since we know that, the more the latent heat of evaporation of a liquid, the more cooling effect it produces.

The liquid B will produce more cooling effect because it has the higher latent heat of evaporation as compared to liquid A.

Therefore, the liquid B will absorb more heat and produce a more cooling effect than the liquid A.

hope this helppps uh dear :)

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