Which of the following gases has highest solubility in water at 298 k

General
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which of the following gases has highest solubility in water at 298 k

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Answer:

There are several gases that have different solubility levels in water. However, at 298K, the following gases have the highest solubility in water:

  • Ammonia (NH3): Ammonia gas is highly soluble in water due to hydrogen bonding between the hydrogen atoms of water molecules and the lone pair of electrons on the nitrogen atom in the ammonia molecule. The solubility of ammonia in water increases with increasing pressure and decreasing temperature at a given pressure.

  • Carbon dioxide (CO2): Carbon dioxide can dissolve in water to form carbonic acid, which also dissociates to produce hydronium ions and bicarbonate ions. Carbon dioxide dissolves in water best at low temperatures and high pressures, so its solubility decreases at higher temperatures and lower pressures.

  • Oxygen (O2): Oxygen gas has low solubility in water, but it can still dissolve in water due to London dispersion forces and hydrogen bonding with water molecules. The solubility of oxygen in water decreases with increasing temperature and salinity.

Therefore, among these gases, ammonia has the highest solubility in water at 298K.