Write the law which explains the solubility of gases.

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Solution

At any given temperature, the mass of gas dissolved by a fixed volume of liquid is directly proportional to the pressure on the surface of the liquid. This law is known as Henry's law.

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Q. Write two gases which are soluble in water.

Question 18
The value of Henry's constant, $K_{H} i s . . . . . . . . . . . .$
(a) greater for gases with higher solubility
(b) greater for gases with lower solubility
(c) constant for all gases
(d) not related to the solubility of gases

What is the effect of pressure on solubility of gases? Explain with an example.

Q. The value of Henry's law constant for some gases at

293 K

is given below. Arrange the gases in the increasing order of their solubility.

H e = 144.97 k b a r

;

H_{2} = 69.16 k b a r

N_{2} = 76.48 k b a r

;

O_{2} = 34.86 k b a r

State Henry’s law. Why do gases always tend to be less soluble in liquids as the temperature is raised?

State Raoult’s law for the solution containing volatile components. Write two differences between an ideal solution and a non-ideal solution.

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