K(H) value for Ar((g)), CO(2(g)), HCHO((...

`K_(H)` value for `Ar_((g)), CO_(2(g)), HCHO_((g))` and `CH_(4(g))` are `40.39, 1.67, 1.83xx10^(-5)` and 0.413 respectively. Arrange these gases in the order of their increasing solubility.

`HCHO lt CH_(4)lt CO_(2)lt Ar`

`HCHO lt CO_(2)lt CH_(4)lt Ar`

`Ar lt CO_(2)lt CH_(4)lt HCHO`

`Ar lt CH_(4)lt CO_(2)lt HCHO`

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Explanation : Higher the value of `K_(H)` lower will be the solubility of the gas at a given pressure, hence the solubility of given gases would increase with increase in `K_(H)` values.

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