11th Class Chemistry The p-Block Elements-I

  • question_answer 50)   Which of the following oxides is acidic in nature? (a) \[{{B}_{2}}{{O}_{3}}\]                              (b) \[A{{l}_{2}}{{O}_{3}}\]                            (c)\[G{{a}_{2}}{{O}_{3}}\]                                (d) \[{{\ln }_{2}}{{O}_{3}}\]

    Answer:

      (a) \[{{B}_{2}}{{O}_{3}}\]shows acidic nature as it combines with alkalies to form metaborates. \[{{B}_{2}}{{O}_{3}}+2NaOH\to 2NaB{{O}_{2}}+{{H}_{2}}O\]                


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