JCECE Engineering JCECE Engineering Solved Paper-2012

  • question_answer
    The correct order in which the \[O-O\] bond length increases in the following is

    A) \[{{H}_{2}}{{O}_{2}}<{{O}_{2}}<{{O}_{3}}\]         

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

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

    D) \[{{O}_{2}}<{{H}_{2}}{{O}_{2}}<{{O}_{3}}\]

    Correct Answer: C

    Solution :

    Bond length of\[O-O\]in\[{{O}_{2}}=1.21\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] Bond length of\[O-O\]in\[{{O}_{3}}=1.278\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] Bond length of\[O-O\]in\[{{H}_{2}}{{O}_{2}}=1.49\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] Therefore, correct order of \[O-O\]bonds length is (bond order decrease in the same order)                 \[{{O}_{2}}>{{O}_{3}}>{{H}_{2}}{{O}_{2}}\] Bond length of\[O-O\]in\[{{H}_{2}}{{O}_{2}}=1.49\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]


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