Question

Which of the following aqueous solutions will exhibit the highest boiling point?

Options

• 0.01 M Urea

• 0.01 M KNO₃

• 0.01 M Na₂SO₄

• 0.015 M C₆H₁₂O₆

Answer 1

0.01 M Na₂SO₄

Explanation:

ΔT_b = i × K_b × m

Assume that m = M

K_b is constant for all.

1. i × M = 1 × 0.01 = 0.01

2. i × M = 2 × 0.01 = 0.02

3. i × M = 3 × 0.01 = 0.03

4. i × M = 1 × 0.015 = 0.015