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NEET Sample Paper NEET Sample Test Paper-59

  • question_answer
    The pKa of a weak acid is 4.8. What should be the ratio of [Acid] / [Salt] of a buffer is pH = 5.8 is repaired?

    A) 0.1                               

    B) 10     

    C) 1                                 

    D) 2

    Correct Answer: A

    Solution :

    [a] 0.1 For acidic buffer mixture, \[pH=pKa+\log \frac{[salt]}{acid}\] \[or\,\log \,\frac{[salt]}{[acid]}\] \[\therefore \,\,[salt/acid]=10\] \[Ratio\,=0.1\]


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