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EAMCET Medical EAMCET Medical Solved Paper-2008

  • question_answer
    When 0.1 mole of an acid is added to 2 L of a buffer solution, the pH of the buffer decreases by 0.5. The buffer capacity of the solution is

    A)  0.6                                        

    B)  0.4

    C)  0.2                                        

    D)  0.1

    Correct Answer: D

    Solution :

                     Buffer capacity \[\text{=}\frac{\text{number}\,\text{of moles of acid added/L}}{\text{change in pH}}\] Given, number of moles of add added/L \[=\frac{0.1}{2}\]                 Change in \[pH=0.5\]                 Buffer capacity \[=\frac{0.1}{2\times 0.5}=\frac{0.1}{1}=0.1\]


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