CBSE Class 12 · 2004 · Delhi Compartment · SolutionsVery Short Answer

Which will have higher boiling point, 0.1 M NaCl or 0.1 M BaCl

_{2}

solution in water?

Answer: 0.1 M BaCl₂ — it gives 3 ions per formula unit against NaCl's 2, so more particles and larger ΔT_b.

Solution

BaCl

_{2} \to

^{2 +}

+ 2Cl

^{-}

gives 3 particles per formula unit; NaCl gives 2.
At the same molarity the BaCl

_{2}

solution has more particles, a larger

Δ T_{b}

, and hence the higher boiling point.

CBSE Class 12 Board · 2004 · Delhi Compartment · Subjective