CET Karnataka Medical CET - Karnataka Medical Solved Paper-2013

  • question_answer
    An example for a neutral buffer is

    A)  ammonium hydroxide and ammonium chloride

    B)  acetic acid and sodium acetate

    C)  acetic acid and ammonium hydroxide

    D)  citric acid and sodium citrate.

    Correct Answer: C

    Solution :

    : \[\underset{Weak\,acid,\,{{K}_{a}}}{\mathop{C{{H}_{3}}COOH}}\,+\underset{Weak\,base\,,{{K}_{b}}}{\mathop{N{{H}_{4}}OH}}\,\xrightarrow{{}}\underset{Netural}{\mathop{C{{H}_{3}}COON{{H}_{4}}}}\,+{{H}_{2}}O\] Here, \[{{K}_{a}}={{K}_{b}}\] i.e., solution will be neutral in nature.


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