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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

What is the significance of Henry’s Law constant KH?

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प्रश्न

What is the significance of Henry’s Law constant KH?

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उत्तर

Henry's law is expressed mathematically as,

p = KH x

(where, p is the partial pressure of the gas in vapour phase and x is the mole fraction of the gas in solution)

Thus it is significant from above equation that,

"higher the value of Henry’s law constant KH, the lower is the solubility of the gas in the liquid".

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अध्याय 2: Solutions - Exercises [पृष्ठ २५]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 2 Solutions
Exercises | Q III. 40. | पृष्ठ २५

संबंधित प्रश्न

What is the effect of temperature on solubility of a gas in a liquid?


Explain, why do aquatic animals prefer to stay at lower level of water during summer?


Gas (A) is more soluble in water than Gas (B) at the same temperature. Which one of the two gases will have the higher value of KH (Henry’s constant) and why


Why do gases always tend to be less soluble in liquids as the temperature is raised?


The air is a mixture of a number of gases. The major components are oxygen and nitrogen with approximate proportion of 20% is to 79% by volume at 298 K. The water is in equilibrium with air at a pressure of 10 atm. At 298 K if the Henry’s law constants for oxygen and nitrogen are 3.30 × 107 mm and 6.51 × 107 mm respectively, calculate the composition of these gases in water.


Which mixture is used for respiration by deep sea divers?

(A) He + O2

(B) Ne + O2

(C) Ar + O2

(D) Kr + O2


How does solubility of a gas in water varies with the temperature?


A solution is prepared by dissolving 9.25 g of non-volatile solute in 450 mL of water. It has an osmotic pressure of 350 mm of Hg at 27°C. Assuming the solute is non-electrolyte, determine its molecular mass. (R = 0.0821 Lit-atm K1 mol−1)


State Henry’s law.


Which law shows relation between pressure and solubility of a gas in solvent?


Which of the following factor(s) affect the solubility of a gaseous solute in the fixed volume of liquid solvent?

(a) nature of solute

(b) temperature

(c) pressure

(i) (a) and (c) at constant T

(ii) (a) and (b) at constant P

(iii) (b) and (c) only

(iv) (c) only


Solubility of gases in liquids decreases with rise in temperature because dissolution is an ______.


Explain the following phenomena with the help of Henry’s law.

Painful condition known as bends.


Match the items given in Column I with the type of solutions given in Column II.

Column I Column II
(i) Soda water (a) A solution of gas in solid
(ii) Sugar solution (b) A solution of gas in gas
(iii) German silver (c) A solution of solid in liquid
(iv) Air (d) A solution of solid in solid
(v) Hydrogen gas in palladium (e) A solution of gas in liquid
  (f) A solution of liquid in solid

Assume that argon exerts a partial pressure of 6 bar. Calculate the solubility of argon gas in water. (Given Henry’s law constant for argon dissolved in water, KH = 40 k bar)


Solubility of gas in liquid decreases with increase in ______.


Amongst the following compounds, identify which are insoluble, partially soluble and highly soluble in water?

  1. phenol
  2. toluene
  3. formic acid
  4. ethylene glycol
  5. chloroform
  6. pentanol

Assertion (A): Helium is used to dilute oxygen in diving apparatus.

Reason (R): Helium has high solubility in O.

In the light of the above statements, choose the correct answer from the options given below:


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