Q.

The value of Henry's law constant for argon (Ar), carbon dioxide (CO2), methane (CH4) and formaldehyde (HCHO) are respectively 40.3 K bar,1.67 K bar, 0.413 K bar and 1.83 x 10-5 K bar at 298 K.The correct order of their solubility is

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a

Ar

b

HCHO

c

Ar

d

Ar

answer is C.

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Detailed Solution

Higher the value of Henry's law constant, lower is the solubility of gas in water (or in liquid solvent).The order of K4 value is:ArCO2CH4HCHO40.3>1.67>0.413>1.83×10−5Thus, the order of solubility is:Ar
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