Question

Which of the following solutions will have the highest boiling point ?

• A. $\text{0}\text{.1}\text{M}{\text{FeCl}}_{\text{3}}$
• B. $\text{0}\text{.1}\text{M}{\text{BaCl}}_{\text{2}}$
• C. $\text{0}\text{.1}\text{M}\text{NaCl}$
• D. $\text{0}\text{.1}\text{M}\text{Urea}$

Answer 1

Answer: (A)

$\text{0}\text{.1}\text{M}{\text{FeCl}}_{\text{3}}$ will give the maximum number of particles (i.e.,ions) in the solution. Hence, its elevation in boiling point is maximum and therefore, it has highest boiling point.
${\text{FeCl}}_{\text{3}}\rightleftharpoons {\text{Fe}}^{\text{3+}}\text{+}{\text{3Cl}}^{-}$