Punjab Medical Punjab - MET Solved Paper-2008

  • question_answer
    To dissolve argentite ore which of the following is used?

    A) \[Na[Ag{{(CN)}_{2}}]\] 

    B) \[NaCN\]

    C) \[NaCl\]                              

    D) \[HCl\]

    Correct Answer: B

    Solution :

    Argentite is\[A{{g}_{2}}S\]. \[A{{g}_{2}}S+4NaCN\xrightarrow{{}}2Na(Ag{{(CN)}_{2}}]+N{{a}_{2}}S\] \[AgCl+2NaCN\xrightarrow{{}}Na[Ag{{(CN)}_{2}}]+NaCl\]


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