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STD 12 -1. Solution and colligative properties — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 -1. Solution and colligative properties4 Marks
MCQ
Which one of the following solution has maximum vapour pressure at $27\,^oC$ temperature
  • A
    $1\, M\, Na_2SO_4$
  • ✓
    $1\, M\, AlCl_3$
  • C
    $1\, M\, KBr$
  • D
    $1\, M\, MgCl_2$
✓

Answer

Correct option: B.
$1\, M\, AlCl_3$
b
$\Delta T_{b}=i \times K_{b} \times m$

$i \times 0.1 \times K_{b}=3 \times 0.05 \times K_{b} \times 2$

$i=3$

$\left[C r\left(N H_{3}\right)_{5} \cdot C l\right] C l_{2} \rightarrow\left[C r\left(N H_{3}\right)_{5} C l\right]^{+2}+2 C l^{-}$

$x=5$

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