Question

Henry's law is applicable only when - the pressure of the gas is not too high and temperature is not too low , why ?

Answer 1

Answer:

Pressure is directly proportional to the temperature when the volume is held constant for a given amount of gas. It is also known as Gay-Lussac law.

Now, according to Henry's law, the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid.

So, if pressure of gas is too high, the temperature will also be high and solubility of the gas will be too high which will neither obey Henry's law.

If, temperature is too low, the pressure will be too low and solubility will also be too low.

Hence, this is the reason.