Identify the compound amongst the following of which 0.1 M aqueous solution has highest boiling point.

Options

A. Glucose
B. Sodium chloride
C. Calcium chloride
D. Ferric chloride

Answer

D

Explanation

Since they are all the same concentration, the one that will break into the most parts has highest boiling point. Ionic compounds will ionize.
a: 1 part (Covalent, does not ionize)
Glucose does not undergo dissociation
b: 2 parts (1 Na,Cl)
`NaCl ltimplies Na^(+) + Cl^(-)`
(c) 3 parts (1 Ca, 2 Cl)
`CaCl_(2) ltimplies Ca^(2+) + 2Cl^(-)`
d. 4 parts (1 Fe, 3 Cl)
`FeCl_(3) ltimplies Fe^(3+) + 3Cl^(-)`
Hence option 'd'.