Haryana PMT Haryana PMT Solved Paper-2004

  • question_answer \[{{H}_{3}}P{{O}_{3}}\] is:

    A)  A dibasic acid 

    B)  A tribasic acid

    C)  monobasic     

    D)  neutral

    Correct Answer: A

    Solution :

                    The structure of phosphorous acid \[({{H}_{3}}P{{O}_{3}})\] is as follows: \[HO-\overset{O}{\mathop{\overset{||}{\mathop{\underset{H}{\mathop{\underset{|}{\mathop{P}}\,}}\,}}\,}}\,-OH\] As it has \[2-OH\] groups, hence it shows dibasic character.

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