Question
Chemistry Question on Solubility
Which of the following gases at 298 K and 1 atm pressure is having maximum solubility in water?
(A) Methanal, KH = 0.000018
(B) Argon, KH = 40.3
(C) Methane, KH = 0.41
(D) CO2, KH = 1.6
Choose the correct answer from the options given below:
A
Methanal
B
Argon
C
Methane
D
CO₂
Answer
Methanal
Explanation
Solution
The solubility of a gas in water is inversely proportional to the value of Henry’s constant, KH. Methanal has the lowest KH value, thus it is the most soluble gas in water.