JEE Main & Advanced Chemistry Analytical Chemistry Question Bank Wet Test for Acid Radical

  • question_answer
    Which of the following precipitate does not dissolve even in large excess of \[N{{H}_{4}}OH\] [MP PMT 1991]

    A) \[AgCl\]

    B) \[AgBr\]

    C) \[AgI\]

    D) None of these

    Correct Answer: C

    Solution :

     AgCl and AgBr dissolve in NH4OH and form complexes but AgI doesn?t react with NH4OH.  e.g. \[AgCl\ +2N{{H}_{4}}OH\ \to \ \underset{\text{complex}}{\mathop{\left[ Ag{{(N{{H}_{3}})}_{2}} \right]}}\,Cl+2{{H}_{2}}O\]


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