Which of the following gases does NOT strictly obey Henry's law when dissolved in water at standard — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Henry's law strictly applies to gases that do not react chemically with the solvent or undergo association/dissociation. $NH_3$ undergoes hydrogen bonding and reacts with water to form $NH_4OH$, which dissociates into $NH_4^+$ and $OH^-$ ions, causing significant deviations from Henry's law.