This document discusses solubility of gases in liquids and Henry's law. It covers factors that affect gas solubility such as temperature, pressure, and the nature of the gas and solvent. Henry's law states that at constant temperature, the solubility of a gas is directly proportional to its partial pressure. Examples are given of how Henry's law applies to soda products, scuba diving, and mountain climbing.

1. SOLUBILITY – 5
SOLUBILITY OF GAS IN LIQUID
& HENRY’S LAW
Presented By:
Mr. S.M. Ambore
Asst. Professor,
DK Patil Institute of Pharmacy, Loha. Nanded

2. LEARNING OUTCOMES….
Solubility of Gas
Factors Affecting Gas
Solubility
Henry’s Law
Application of Henry’s Law 2

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SOLUBLITY OF GAS
The best example for solubility of gas in solvent is
AQUATIC LIFE.

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FACTORS AFFECTING GAS SOLUBILITY
1. Temperature (Le-Chartelier’s Principle)
2. Pressure
3. Nature of Gas and Solvent(Polar/Non-polar)

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EFFECT OF TEMPERATURE

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EFFECT OF PRESSURE

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EFFECT OF NATURE OF GAS & SOLVENT

8. HENRY’S LAW
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HENRY’S LAW
At constant temperature(T), the solubility of a
gas (mass of gas dissolved per unit volume) in a liquid is
directly proportional to the pressure of the gas.
DALTON LAW
The solubility of a gas in a liquid is function of
partial pressure of the gas.

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GAS TEMP(K) KH
He 293 144.97
H2 293 69.16
N2 293 76.48
N2 303 88.84
Where,
P – Partial pressure of gas in vapor phase
X – Mole fraction of gas in solution
KH -- Henry’s law constant
P = KH X

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HENRY’S LAW SATISFY
The gas doesn't react
with solvent
Temperature is not
very low
Pressure is not too
high

12. APPLICATION OF HENRY’S LAW
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APPLICATION OF
HENRY’S LAW
SCUBA
MOUNTAINER

13. APPLICATION OF HENRY’S LAW
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1. SODA PRODUCTS: In Soda Carbon dioxide is dissolved
under high pressure which comes out as a FISS, when cap is
opened.ie. Pressure is released.
2. SCUBA DRIVERS: Nitrogen is replaced with Helium to avoid
BENDS caused due to Nitrogen.
3. MOUNTANERS: At high altitude oxygen level decreases
which may leads to anoxia(loss of memory)

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