JEE Main & Advanced Sample Paper JEE Main Sample Paper-13

  • question_answer
    Anhydrous \[AlC{{l}_{3}}\] fumes in air because of

    A)  dehydration                     

    B)  hydration          

    C)  hydrolysis          

    D)  reduction

    Correct Answer: C

    Solution :

     Hydrolysis of \[{{K}_{R}}=\frac{1}{2}I{{\omega }^{2}}=\frac{1}{5}m{{r}^{2}}{{\omega }^{2}}\] gives \[\frac{{{K}_{R}}}{K}=\frac{\frac{1}{5}m{{r}^{2}}{{\omega }^{2}}}{\frac{7}{10}m{{r}^{2}}{{\omega }^{2}}}=\frac{2}{7}\] which fumes in air. \[\therefore \]


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