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Solutions question

2022 · Q116
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Solutions question

2022 · Q116

NEETChemistrySolutionsMCQ+4 / −1

KH value for some gases at the same temperature 'T' are given :

Gas KH_HH​/k bar
Ar 40.3
CO2_22​ 1.67
HCHO 1.83 ×\times× 10−5^{ - 5}−5
CH4_44​ 0.413

where KH is Henry's Law constant in water. The order of their solubility in water is :

  1. A
    HCHO < CH4 < CO2 < Ar
  2. B
    Ar < CO2 < CH4 < HCHO
  3. C
    Ar < CH4 < CO2 < HCHO
  4. D
    HCHO < CO2 < CH4 < Ar
View written solutionFree

Correct answer: B

According to Henry's Law,

p = KHx

Where 'p' is partial pressure of gas in vapour phase.

KH is Henry's Law constant.

'x' is mole fraction of gas in liquid.

Higher the value of KH at a given pressure, lower is the solubility of the gas in the liquid.

$\therefore$ Solubility : Ar < CO2 < CH4 < HCHO

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