Question

State henry's law and mention some of its important application

Answer 1

:-

Henry’s law :-

According to Henry’s law the solubility of gas in a liquid is directly proportional to the pressure of the gas

Mathematically

 mass of the dissolved gas  α  pressure of the gas

let mass of dissolved gas in unit volume            = m

pressure of gas                                                 = p

to remove sign of proportional we us a constant

here  KH is Henry’s law constant

so we get

m = KH*p                            …………….(1)

we can measure mass of solute in term of molar fraction also

Hence our formula will

X = KH*p   

Answer 2

Hey! Here is ur answer...

Henry's Law states that " The mass of gas dissolved per unit volume of a solvent at a given temperature is directly proportional to pressure at equilibrium of the solution ".

Applications of Henry's law :-

1) In the production of carbonated beverages-in order to increase the solubility of CO2 in cold drinks,beer etc,the bottle are sealed under high pressure.When the bottle is opened under normal atmospheric pressure,the pressure inside the bottle falls to atmospheric pressure & the excess CO2 bubbles out of the bottle causing effervescence.

2) At high altitudes-the partial pressure of oxygen at high altitudes is less than the ground level.this results in low concentration of oxygen in the blood & tissues of the peoples

3) In scuba diving- during scuba diving,when the diver breaths in compressed air from the supply tank,more nitrogen dissolves in the blood & other body fluids because the pressure at that depth is far greater than the surface atmospheric pressure.

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