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JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Nitrogen Family

  • question_answer
    Dissociation of \[{{H}_{3}}P{{O}_{4}}\] occurs in following stages [CPMT 1976]

    A) 1

    B) 2

    C) 3

    D) 4

    Correct Answer: C

    Solution :

    \[{{H}_{3}}P{{O}_{4}}\,\,\,\,\,\,\,\,\,\,\,{{H}^{+}}+{{H}_{2}}PO_{4}^{-}\] ⇌\[{{H}^{+}}+{{H}_{2}}PO_{4}^{-}\] \[{{H}_{2}}PO_{4}^{-}\] ⇌\[\,{{H}^{+}}+HPO_{4}^{2-}\] \[HPO_{4}^{2-}\] ⇌\[{{H}^{+}}+PO_{4}^{3-}\]


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