Question

Which of the following aqueous solution has minimum freezing point ?
(a) 0.01 m NaCl
(b) 0.005 m C₂H₅OH
(c) 0.005 m MgI₂
(d) 0.005 m MgSO₄.

Answer 1

van't Hoff factor, i = 2 for NaCl, so conc. = 0.02, which is maximum in the present case.

A✔✔✔✔✔

Answer 2

Answer:

Which of the following aqueous solution has minimum freezing point ?

(a) 0.01 m NaCl

(b) 0.005 m C₂H₅OH

(c) 0.005 m MgI₂

(d) 0.005 m MgSO₄.