JEE Main & Advanced Chemistry Alkali Metals Question Bank Alkali Metals

  • question_answer Which one of the following salts gives aqueous solution which is weakly basic [Bihar CEE 1995]

    A) \[NaHC{{O}_{3}}\]

    B) \[NaHS{{O}_{4}}\]

    C) \[NaCl\]

    D) \[N{{H}_{4}}HC{{O}_{3}}\]

    Correct Answer: A

    Solution :

    \[\underset{\begin{smallmatrix}  \text{(Salt of strong} \\  \text{base  }\!\!\And\!\!\text{  weak}  \\  \text{acid)} \end{smallmatrix}}{\mathop{NaHC{{O}_{3}}}}\,\,\,\,\to \,\,\,N{{a}^{+}}\,+\underset{O{{H}^{-}}\,+\,C{{O}_{2}}}{\mathop{\underset{\downarrow }{\mathop{HCO_{3}^{-}}}\,}}\,\]

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