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

  • question_answer
    Which of the following gives a ppt. with \[Pb{{\left( N{{O}_{3}} \right)}_{2}}\] but not with \[Ba{{\left( N{{O}_{3}} \right)}_{2}}\] [CPMT 1979; MP PET 1997]

    A) \[NaCl\]

    B) Sodium acetate

    C) Sodium nitrate

    D) Sodium hydrogen phosphate

    Correct Answer: A

    Solution :

    As \[Pb{{\left( N{{O}_{3}} \right)}_{2}}\] is an ionic compound so the reaction is easy. \[Pb{{\left( N{{O}_{3}} \right)}_{2}}+~2NaCl\]\[\to \ 2NaN{{O}_{3}}\ +\ PbC{{l}_{2}}\], but \[Ba{{\left( N{{O}_{3}} \right)}_{2}}\] has a higher lattice energy, so no reaction takes place.


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