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JEE Main & Advanced AIEEE Solved Paper-2008

  • question_answer
    Four species are listed below:
     \[(i)\,\,\,HCO_{3}^{-}\] 
     \[(ii)\,\,\,{{H}_{3}}{{O}^{+}}\]
     \[(iii)\,\,\,HSO_{4}^{-}\]
     \[(iv)\,\,\,HS{{O}_{3}}F\]
    Which one of the following is the correct sequence of their acid strength?     AIEEE  Solved  Paper-2007

    A) (i) < (iii) < (ii) < (iv)   

    B) (iii) < (i) < (iv) < (ii)

    C) (iv) < (ii) < (iii) < (i)

    D) (ii) < (iii) < (i) < (iv)

    Correct Answer: A

    Solution :

    The decreasing order of acidic strength is \[HS{{O}_{3}}F>{{H}_{3}}{{O}^{+}}>HSO_{4}^{-}\,>HCO_{3}^{-}\]


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