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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Hydrogenion concentration pH scale and buffer solution

  • question_answer
    In a mixture of a weak acid and its salt, the ratio of concentration of acid to salt is increased ten-fold. The \[pH\] of the solution                                                [KCET 1996]

    A)                 Decreases by one           

    B)                 Increases by one-tenth

    C)                 Increases by one             

    D)                 Increases ten-fold

    Correct Answer: A

    Solution :

               \[[{{H}^{+}}]\]= increased ten fold means pH of solution decreased by one.                                 \[pH=\text{log}\frac{1}{[{{H}^{+}}]}\]


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