2. Questions Bank
  3. NEET
  4. Chemistry
  5. Solutions / विलयन

NEET Chemistry Solutions / विलयन Question Bank Self Evaluation Test - Solutions

  • question_answer
    1.0 M aqueous solution of \[CrC{{l}_{3}}.6{{H}_{2}}O\] freezes at \[-5.58{}^\circ C\]. Assuming complete ionization of the hydrated complex, which of the following isomers conforms to the observation (\[{{K}_{f}}\] for water \[=1.86K\,kg\,mo{{l}^{-1}}\])?

    A) \[[Cr{{\left( {{H}_{2}}O \right)}_{3}}C{{l}_{3}}].3{{H}_{2}}O\]

    B) \[[Cr{{\left( {{H}_{2}}O \right)}_{4}}C{{l}_{4}}]Cl.2{{H}_{2}}O\]

    C) \[[Cr{{\left( {{H}_{2}}O \right)}_{5}}Cl]C{{l}_{2}}.{{H}_{2}}O\]

    D) \[[Cr{{\left( {{H}_{2}}O \right)}_{6}}]C{{l}_{3}}\]

    Correct Answer: C

    Solution :

    [c] \[i=\frac{5.58}{1.86}=3;\] \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{5}}Cl \right]C{{l}_{2}}.{{H}_{2}}O\xrightarrow{{}}\] \[{{[Cr{{({{H}_{2}}O)}_{5}}Cl]}^{2+}}+2C{{l}^{-}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner