12th Class Chemistry Solutions / विलयन Question Bank Case Based (MCQs) - Solutions

  • question_answer
    \[0\centerdot 1M\] \[{{K}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\] is 60% ionized. What will be Van't Hoff factor?

    A) \[1\centerdot 4\]

    B) \[2\centerdot 4\]

    C) \[3\centerdot 4\]

    D) \[4\centerdot 4\]

    Correct Answer: C

    Solution :

    \[\alpha =\frac{i-1}{n-1}\Rightarrow n=5\] for \[{{K}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right]\] \[0.6=\frac{i-1}{5-1}\Rightarrow i=2.4+1=3.4\]  


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