CMC Medical CMC-Medical VELLORE Solved Paper-2009

  • question_answer
    Which of the following dissolves in water but does not give any oxyacid solution?

    A)  \[S{{O}_{2}}\]                                  

    B)  \[O{{F}_{2}}\]

    C)  \[SC{{l}_{4}}\]                  

    D)  \[S{{O}_{3}}\]

    Correct Answer: B

    Solution :

                    \[O{{F}_{2}}\]dissolves in water but does not give any oxyacid solution. While \[S{{O}_{2}},SC{{l}_{4}}\] and\[S{{O}_{3}}\] give oxyacid solution in water. \[S{{O}_{2}}+{{H}_{2}}O\xrightarrow{{}}\underset{\begin{smallmatrix}  sulphurous \\  \,\,\,\,\,acid \end{smallmatrix}}{\mathop{{{H}_{2}}S{{O}_{3}}}}\,\] \[SC{{l}_{4}}+3{{H}_{2}}O\xrightarrow[{}]{{}}\underset{\begin{smallmatrix}  sulphurous \\  \,\,\,\,\,acid \end{smallmatrix}}{\mathop{{{H}_{2}}S{{O}_{3}}}}\,+4HCl\] \[S{{O}_{3}}+{{H}_{2}}O\xrightarrow{{}}\underset{sulphuric\,acid}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,\]


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