List the following solutions in order of increasing boiling point: 0.15m NaI, 0.10m K₃PO₄, 0.20 ethylene glycol A) NaI

Question

List the following solutions in order of increasing boiling point: 0.15m NaI, 0.10m K₃PO₄, 0.20 ethylene glycol A) NaI < K₃PO₄ < ethylene glycol B) ethylene glycol < K₃PO₄ < NaI C) NaI < ethylene glycol < K₃PO₄ D) ethylene glycol < NaI < K₃PO₄ E) None of the above

Quizplus · Accepted Answer

The boiling point elevation depends on the molality and the number of particles the solute dissociates into. NaI dissociates into 2 ions, K3PO4 into 4 ions, and ethylene glycol does not dissociate. Thus, K3PO4 has the highest boiling point elevation, followed by NaI, and then ethylene glycol.

List the Following Solutions in Order of Increasing Boiling Point