Which is true regarding how gasses dissolve in liquids? (a) The concentration of

Question

Which is true regarding how gasses dissolve in liquids?

(a) The concentration of a particular gas in a liquid equilibrates to match the concentration of that gas in the air to which the liquid is exposed.

(b) Different gasses have the same solubility in liquids

(c) The partial pressure of a gas in a liquid is equal to the amount freely diffusing in the liquid plus the amount bound to large molecules within the liquid.

(d) The partial pressure of a particular gas in a liquid equilibrates to match the partial pressure of that gas in the air to which the liquid is exposed, and the concentration of gas dissolved in the liquid is proportional to its solubility.

(e) As the partial pressure of a particular gas in an air sample increases, the concentration of that gas in a liquid exposed to that air sample decreases.

Explanation / Answer

The dissolution of gases in liquid depends on many factors like temperature, pressure etc. The Henry's law expresses the pressure dependence of gas dissoultion in liquids. The partial pressure of a particular gas in liquid equilibrates to match the patial pressure of that gas in the air to which the liquid is exposed, and the concentration of gas dissolved in the liquid is proportional to its solubility. So, option d is the correct answer.

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