Question

Arrange the following according to increasing boling point:

1m NaCl, 1m CaCl2, 1m C6H12O6, 1m AlCl3

Explain your answer.

Answer 1

The boiling point of substances depends on the number of their particles in solution. The more particles, the higher the boiling point. Since all solutions with a concentration of 1M, so the number of particles depends on the ionization of substances in solution:

NaCl = Na⁺ + Cl^- - 2 particles;

CaCl₂ = Ca²⁺ + 2Cl^- - 3 particles;

C₆H₁₂O₆ = X - ionization does not pass, so 1 particle;

AlCl₃ = Al³⁺ + 3Cl^- - 4 particles;

So, increasing boling point:

C₆H₁₂O₆ (1 particle) - NaCl (2 particles) - CaCl₂ (3 particles) - AlCl₃ (4 particles).

Answer: C₆H₁₂O₆ - NaCl - CaCl₂ - AlCl₃.