JEE Main & Advanced Chemistry Hydrogen & Its Compounds Question Bank Water or hydride of oxygen

  • question_answer When zeolite (Hydrated sodium aluminium silicate) is treated with hard water the sodium ions are exchanged with [DPMT 2000]

    A) \[O{{H}^{-}}\] ions

    B) \[SO_{4}^{2-}\] ions

    C) \[C{{a}^{2+}}\] ions

    D) \[{{H}^{+}}\] ions

    Correct Answer: C

    Solution :

    \[\underset{\text{Zeolite}}{\mathop{N{{a}_{2}}A{{l}_{2}}S{{i}_{2}}{{O}_{8}}}}\,.x{{H}_{2}}O+C{{a}^{+2}}\to \]\[CaA{{l}_{2}}S{{i}_{2}}{{O}_{8}}.x{{H}_{2}}O+2N{{a}^{+}}\]

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