BCECE Engineering BCECE Engineering Solved Paper-2010

  • question_answer
    Iodine is formed when \[\text{KI}\]reacts with a solution of

    A) \[CuS{{O}_{4}}\]              

    B)         \[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]          

    C)  \[ZnS{{O}_{4}}\]             

    D)         \[FeS{{O}_{4}}\]

    Correct Answer: A

    Solution :

    \[2CuS{{O}_{4}}+4KI\xrightarrow{{}}C{{u}_{2}}{{I}_{2}}+{{I}_{2}}+2{{K}_{2}}S{{O}_{4}}\] \[{{\text{I}}^{-}}\]being strong reducing agent reduces \[C{{u}^{2+}}\]ion into \[C{{u}^{+}}.\]


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