JEE Main & Advanced JEE Main Paper (Held on 08-4-2019 Morning)

  • question_answer
    Diborane \[({{B}_{2}}{{H}_{6}})\]reacts independently with \[{{O}_{2}}\] and \[{{H}_{2}}O\] to produce, respectively [JEE Main 8-4-2019 Morning]

    A) \[HB{{O}_{2}}\] and \[{{H}_{3}}B{{O}_{3}}\]

    B) \[{{H}_{3}}B{{O}_{3}}\]and \[{{B}_{2}}{{O}_{3}}\]

    C) \[{{B}_{2}}{{O}_{3}}\]and \[{{H}_{3}}B{{O}_{3}}\]

    D)   \[{{B}_{2}}{{O}_{3}}\] and \[{{[B{{H}_{4}}]}^{-}}\]

    Correct Answer: C

    Solution :

    \[{{B}_{2}}{{H}_{6}}+3{{H}_{2}}O\xrightarrow[{}]{{}}2{{H}_{3}}B{{O}_{3}}+3{{H}_{2}}\]      \[{{B}_{2}}{{H}_{6}}+3{{O}_{2}}\xrightarrow[{}]{{}}{{B}_{2}}{{O}_{3}}+3{{H}_{2}}O\] Correct option : (c)


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