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

Explain the following phenomena with the help of Henry’s law. Painful condition known as bends. - Chemistry

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प्रश्न

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

Painful condition known as bends.

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उत्तर

To Henry's law pressure of a gas is directly proportional to solubility. Scuba divers when coming towards surface the air pressure gradually decreases. This reduced pressure releases the dissolved gases present in blood and leads to the formation of bubbles of nitrogen in the blood. These blocks capillaries and creates a medical condition known as bends, which is painful and dangerous to live.

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पाठ 2: Solutions - Exercises [पृष्ठ २५]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 2 Solutions
Exercises | Q III. 42. (a) (i) | पृष्ठ २५

संबंधित प्रश्‍न

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


Henry’s law constant for CO2 in water is 1.67 × 108 Pa at 298 K. Calculate the quantity of CO2 in 500 mL of soda water when packed under 2.5 atm CO2 pressure at 298 K.


Identify that the following compound is insoluble, partially soluble or highly soluble in water:

pentanol


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.


State Henry’s law.


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


Value of Henry's constant KH ______.


Value of Henry’s constant KH ______.


Explain the solubility rule “like dissolves like” in terms of intermolecular forces that exist in solutions.


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

State Henry’s law and explain why are the tanks used by scuba divers filled with air diluted with helium (11.7% helium, 56.2% nitrogen and 32.1% oxygen)?


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)


If O2 gas is bubbled through water at 303 K, the number of millimoles of O2 gas that dissolve in 1 litre of water is ______. (Nearest integer)

(Given: Henry's Law constant for O2 at 303 K is 46.82 k bar and partial pressure of O2 = 0.920 bar)

(Assume solubility of O2 in water is too small, nearly negligible)


Henry's constant (in k bar) for four gases α, β, γ and δ in water at 298 K is given below:

  α β γ  δ
KH 50 2 2 × 10-5 0.5

(density of water = 103 kg m-3 at 298 K)

This table implies that:


Identify that the following compound is insoluble, partially soluble and highly soluble in water.

phenol


Identify that the following compound is insoluble, partially soluble and highly soluble in water.

Toluene


Identify that the following compound is insoluble, partially soluble or highly soluble in water:

Chloroform


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