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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2011

  • question_answer
    Excess of silver nitrate solution is added to 100 mL of 0.01 M pentaaqua chloro chromium (III) chloride solution. The mass of silver chloride obtained in grams is [Atomic mass of silver is 108].

    A)  \[287\times {{10}^{-3}}\]

    B)  \[143\times {{10}^{-3}}\]

    C)  \[143\times {{10}^{-2}}\]

    D)  \[287\times {{10}^{-2}}\]

    Correct Answer: A

    Solution :

    The reagent is \[[Cr{{({{H}_{2}}O)}_{5}}Cl]C{{l}_{2}}\] No. of moles of \[C{{l}^{-}}\]ion present                 \[=\frac{2\times 100\times 0.01}{1000}\]                 \[=0.002\] \[\therefore \] Mass of \[AgCl=0.002\times 143.5\]                                 \[=0.287\]                                 \[=287\times {{10}^{-3}}g\]


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