MCQ
Which of the following aqueous solution will exhibit highest boiling point
  • A
    $0.01\, M$ $Na_2SO_4$
  • B
    $0.01\, M$ $KNO_3$
  • $0.015\, M$ urea
  • D
    $0.015\, M$ glucose

Answer

Correct option: C.
$0.015\, M$ urea
c
$\Delta T_{f}=$ Molality $\times K_{f} \times i$

$\Longrightarrow 3.72=1 \times 1.86 \times i$

$\Longrightarrow i=2,$ hence complex is binary.

Also, $C N$ of $P t$ is $6$ and complex is hydrated.

so complex is $\left[ Pt \left( H _{2} O \right)_{3} Cl _{3}\right] Cl \cdot 3 H _{2} O$

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