Under the condition of similar temperature, which of the following solution will have minimum vapour — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Minimum vapour pressure implies maximum lowering of vapour pressure, which depends on the total number of solute particles ($i \times C$). $\text{Al}_2(\text{SO}_4)_3$ gives the highest number of ions ($i=5$) upon complete dissociation, generating the maximum particle concentration. Therefore, correct answer is D.