WB JEE Medical WB JEE Medical Solved Paper-2009

  • question_answer
    Of the following compounds, the most acidic is

    A)  \[A{{s}_{2}}{{O}_{3}}\]                                

    B)  \[{{P}_{2}}{{O}_{5}}\]

    C)  \[S{{b}_{2}}{{O}_{3}}\]                                

    D) \[B{{i}_{2}}{{O}_{3}}\]

    Correct Answer: B

    Solution :

                     Generally, acidic nature of oxides increases along a period from left to right and decreases along a group from up to down. Since As, P, Sb and Bi all belong to V group and arranged in the following manner: P: As, Sb, Bi \[\therefore \] \[{{\text{P}}_{\text{2}}}{{\text{O}}_{\text{5}}}\]is the most and \[\text{B}{{\text{i}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]is the least acidic.


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