MGIMS WARDHA MGIMS WARDHA Solved Paper-2011

  • question_answer
    \[KI\] and\[CuS{{O}_{4}}\]solution when mixed gives

    A)  \[Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]

    B)  \[C{{u}_{2}}{{I}_{2}}+{{K}_{2}}S{{O}_{4}}\]

    C)   \[{{K}_{2}}S{{O}_{4}}+C{{u}_{2}}{{I}_{2}}+{{I}_{2}}\]

    D)   \[{{K}_{2}}S{{O}_{4}}+Cu{{I}_{2}}+{{I}_{2}}\]

    Correct Answer: C

    Solution :

                     Copper sulphate reacts with\[KI\]to give cuprous iodide and iodine. \[\underset{\begin{smallmatrix}  \,\,copper \\  sulphate \end{smallmatrix}}{\mathop{2CuS{{O}_{4}}}}\,+4KI\to \underset{\begin{smallmatrix}  cuprous \\  iodide \end{smallmatrix}}{\mathop{C{{u}_{2}}{{I}_{2}}}}\,+\underset{iodine}{\mathop{{{I}_{2}}}}\,+2{{K}_{2}}S{{O}_{4}}\]


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