JEE Main & Advanced Chemistry The s-Block Elements Question Bank Critical Thinking

  • question_answer The most efficient agent for the absorption of \[S{{O}_{3}}\] is [KCET 1998]

    A) \[98%{{H}_{2}}S{{O}_{4}}\]

    B) \[80%{{H}_{2}}S{{O}_{4}}\]

    C) \[20%\]oleum

    D) \[90%{{H}_{2}}S{{O}_{4}}\]

    Correct Answer: A

    Solution :

      \[\underset{\text{98 }\!\!%\!\!\text{ }}{\mathop{{{H}_{2}}S{{O}_{4}}}}\,+S{{O}_{3}}\,\,\to \,\,\underset{(\text{Fuming}\,{{H}_{2}}S{{O}_{4}})}{\mathop{\underset{\text{Oleum}}{\mathop{{{H}_{2}}{{S}_{2}}{{O}_{7}}}}\,}}\,\]


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