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

  • question_answer
    Mark the compound which turns black with \[N{{H}_{4}}OH\] [AFMC 1981; MP PMT 1995]

    A) Lead chloride

    B) Mercurous chloride

    C) Mercuric chloride

    D) Silver chloride

    Correct Answer: B

    Solution :

    \[H{{g}_{2}}C{{l}_{2}}+2N{{H}_{4}}OH\to \underbrace{N{{H}_{2}}-Hg-Cl}_{{}}+\underset{\text{(Black ppt)}}{\mathop{Hg\,\,\,\,\,}}\,+N{{H}_{4}}Cl+2{{H}_{2}}O\]


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