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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.

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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 Exemplar [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?


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


H2S, a toxic gas with rotten egg like smell, is used for the qualitative analysis. If the solubility of H2S in water at STP is 0.195 m, calculate Henry’s law constant.


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


Give reasons for the following :

Aquatic animals are more comfortable in the cold water than in warm water.


The solubility product (Ksp) of BaSO4 is 1.5 X 10-9.Calculate the solubility of barium sulphate in pure water and in 0.1 M BaCl2.


State Henry's Law. What is the effect of temperature on the solubility of a gas in a liquid?


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)


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


The statement “If 0.003 moles of a gas are dissolved in 900 g of water under a pressure of 1 atmosphere, 0.006 moles will be dissolved under a pressure of 2 atmospheres”, illustrates.


According to Henry’s law, the amount of gas that will dissolve in blood plasma or any other liquid is determined by which of these factors?


Henry’s law constant of oxygen is 1.4 × 10–3 mol lit–1 atm–1 at 298 K. How much of oxygen is dissolved in 100 ml at 298 K when the partial pressure of oxygen is 0.5 atm?


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

Feeling of weakness and discomfort in breathing at high altitude.


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 ______.


Write the two applications of Henry’s law.


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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