Question

Compare the boiling points of very dilute solutions of $AlCl_{3}\left(\right.t_{1}\left.\right)$ and $CaCl_{2}\left(\right.t_{2}\left.\right)$ , both having the same molar concentration

• A. $t_{1}=t_{2}$
• B. $t_{1}>t_{2}$
• C. $t_{2}>t_{1}$
• D. $t_{2}\geq t_{1}$

Answer 1

Answer: (B)

$\text{Δ} \text{T}_{\text{b}} \propto \text{i}$ (Concentration constant)

$\text{} \text{T}_{\text{b}} \propto \text{i}$

$AlCl_{3}$ furnishes more ions than $CaCl_{2}$ and thus shows higher boiling point i.e. $t_{1}>t_{2}$ .