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JIPMER Jipmer Medical Solved Paper-1997

  • question_answer
    What is the normality of 0.30 M \[{{H}_{3}}P{{O}_{4}}\] (a tribasic acid) in the following reaction? \[{{H}_{3}}P{{O}_{4}}+2O{{H}^{-}}\xrightarrow{{}}HPO_{4}^{--}+2{{H}_{2}}O\]

    A)  0.30 N                 

    B)  0.60 N 

    C)         0.90 N           

    D)         0.15 N

    Correct Answer: B

    Solution :

    In the given reaction, two hydrogen atoms are replaced. Hence, here, phosphoric acid is showing 2 basicity. \[\therefore \] Normality = molarity \[\times \] basicity         \[=0.30\times 2=0.60\,N\]


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