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  3. JAMIA MILLIA ISLAMIA

JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2012

  • question_answer
    1 g of silver gets distributed between\[10\text{ }c{{m}^{3}}\]of molten zinc and\[100\text{ }c{{m}^{3}}\]of molten lead at\[800{}^\circ C\]. The distribution constant is 300. The percentage of silver in the zinc layer is approximately

    A)  89                         

    B)  91   

    C)  97                                         

    D)  94

    Correct Answer: C

    Solution :

                    Concentration of Ag in zinc \[=\frac{x}{10}\] \[\therefore \]Concentration of Ag in\[Pb=\frac{1-x}{100}\]                 \[\frac{\frac{x}{10}}{\frac{1-x}{100}}=300\] On solving, we get \[x=97%\]


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