Question

Define henry's law about solubility of a gas in a liquid.

Answer 1

Henry 's  law states that

"Solubility of gas in a liquid at a particular temperature is directly proportional to pressure exerted  by gas "

Mathematically, 
P  =  Kh x χ
                             χ = mole fraction of solute 
                            Kh= constant of proportionality also called henry's constant                               P = pressure exerted by gas 

Answer 2

Henry's law :

The partial pressure of the gas in vapour phase in directly propotional to the mole fraction of the gas in solution.

Solubility of gas in liquid decrease with the increase in temperature.

Because dissolution of gas in liquid is highly exothermic process.

And solubility of gas in liquid increases with the decrease in temperature.

Solubility of gas in liquid increases with the increases with the increase in pressure,because solubility of gas in liquid is directly propotional to pressure

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