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

  • question_answer
    \[{{H}_{4}}{{O}^{+}}\]of a solution is 4. The hydroxide ion concentration of the solution would be [NCERT 1981; CBSE PMT 1991; MP PMT 1994]

    A)                 \[{{10}^{-4}}\]  

    B)                 \[{{10}^{-10}}\]

    C)                 \[{{10}^{-2}}\]  

    D)                 \[{{10}^{-12}}\]

    Correct Answer: B

    Solution :

               pH\[=4\]                    \[pH+pOH=14\] ; \[pOH=14-pH\]                                 \[pOH=14-4=10\]; \[[O{{H}^{-}}]={{10}^{-10}}\]M


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