Question

Assuming complete ionization, which one of the following aqueous solutions will have maxmum boiling point ?
A. `0.2 m NaCI`
B. `0.2 m CaCl_(2)`
C. `0.1 m BaCl_(2)`
D. `0.1 m FeCI_(3)`

Answer 1

Correct Answer - B
The value of any colligative property is more if the number of particles in the solution is more and they are directly proportional to one another.If ionization is complete and the solution is aqueous, the number of moles of particles present ,the number of moles of particles present in the `"solution" = "molarity" xx "number"` of ions produced per `"molecule" xx " degree"` of ionisation `(alpha=1)`. These values for different option are
`(a) 0.2 xx 2 xx 1 = 0.4 (b) 0.2 xx 3 xx 1 = 0.6`
`(c) 0.1 xx 3 xx 1 = 0.3 (d) 0.1 xx 4 xx 1 = 0.4`
Higher the no. of particles, more is the boiling point.