Question

Whose elevation in boiling point will be the same
A. 0.1 m alcl3
B. 0.1 m k2so4
C. 0.1 m nacl
D. 0.1 m urea

Answer 1

1 m MgCl2 has higher boiling point

Change in boiling point of a solution depends on number of solute particles (vant hoff factor of solute) , concentration of solute in solution and ebullioscopic constant of the solvent(Kb)

∆Tb = iKb m

Where m is the molality of the solution

molality is directly proportional to concentration

In the given question ,MgCl2 has highest concentration and highest vant hoff factor i.e., i=3

Hence MgCl2 has highest boiling point