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MGIMS WARDHA MGIMS WARDHA Solved Paper-2013

  • question_answer
    The reaction between metallic silver and aqueous\[NaCN\]forming a soluble complex occurs in the presence of

    A)  nitrogen                             

    B)  oxygen

    C)  helium               

    D)  chlorine

    Correct Answer: B

    Solution :

                    \[4Ag(s)+8C{{N}^{-}}(aq)+2{{H}_{2}}O(l)+{{O}_{2}}(g)\] \[\xrightarrow[{}]{{}}4{{[Ag{{(CN)}_{2}}]}^{-}}(aq)+4O{{H}^{-}}(aq)\]


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