EAMCET Medical EAMCET Medical Solved Paper-1996

  • question_answer
    Perchloric acid is prepared by the action of concentrated sulphuric acid on :

    A)  sodium perchlorate

    B)  barium chloride

    C)  sodium chloride

    D)  barium chlorate

    Correct Answer: A

    Solution :

                     Perchloric acid is prepared by the reaction of \[\text{NaCl}{{\text{O}}_{\text{4}}}\] (sodium per chlorate) with con. \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]as, \[\underset{\begin{smallmatrix}  \text{Sodium} \\  \text{perchlorate} \end{smallmatrix}}{\mathop{NaCl{{O}_{4}}}}\,+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}NaHS{{O}_{4}}+\underset{\begin{smallmatrix}  \text{Perchloric} \\  \text{acid} \end{smallmatrix}}{\mathop{HCl{{O}_{4}}}}\,\]


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