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NEET NEET SOLVED PAPER 2017

  • question_answer
    Concentration of the\[A{{g}^{+}}\]ions in a saturated solution of \[A{{g}_{2}}{{C}_{2}}{{O}_{4}}\]is \[2.2\times {{10}^{-4}}\,mol\,{{L}^{-1}}.\]Solubility product of \[A{{g}_{2}}{{C}_{2}}{{O}_{4}}\]is                                                                                                                                                                       

    A) \[5.3\times {{10}^{12}}\]             

    B) \[~2.42\times {{10}^{8}}\]

    C)  \[2.66\times {{10}^{12}}\]          

    D)        \[~4.5\times {{10}^{11}}\]

    Correct Answer: A

    Solution :

                     \[A{{g}_{2}}{{C}_{2}}{{O}_{4}}(s)\underset{2s}{\mathop{2A{{g}^{+}}(aq)}}\,+\underset{s}{\mathop{{{C}_{2}}O_{4}^{2-}(aq)}}\,\]                 \[{{K}_{sp}}={{[A{{g}^{+}}]}^{2}}[{{C}_{2}}{{O}_{4}}^{2-}]\] \[[A{{g}^{+}}]=2.2\times {{10}^{-4}}M\] \[\therefore \]  \[{{K}_{SP}}={{(2.2\times {{10}^{-4}})}^{2}}(1.1\times {{10}^{-4}})\] \[=5.324\times {{10}^{-12}}\]


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