NEET Chemistry NEET PYQ-Surface Chemistry

  • question_answer
    Which mixture of the solution will lead to the formation of negatively charged colloidal \[[AgI]{{I}^{}}\] [NEET 2019]

    A) \[50mL\text{ }of\text{ }2M\text{ }AgN{{O}_{3}}+50mL\text{ }of\text{ }1.5M\text{ }KI\]

    B) \[50mL\text{ }of\text{ }0.1M\text{ }AgN{{O}_{3}}+50mL\text{ }of\text{ }0.1M\text{ }KI\]

    C)  \[50mL\text{ }of\text{ }1M\text{ }AgN{{O}_{3}}+50mL\text{ }of\text{ }1.5M\text{ }KI\]

    D) \[50mL\text{ }of\text{ }M\text{ }AgN{{O}_{3}}+50mL\text{ }of\text{ }2M\text{ }KI\]

    Correct Answer: C , D

    Solution :

    [c, d] \[AgN{{O}_{3}}+KI\to AgI+KN{{O}_{3}}\]
    for \[{{[AgI]}^{I}}\]colloidal
    KI must be in excels
    , both correct
    50 me\[~AgN{{O}_{3}}+50\] me
    1.5 m
    KI
    50 ml \[~AgN{{O}_{3}}+50\] ml
    2 m KI


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