2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Equilibrium / साम्यावस्था

JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Critical Thinking

  • question_answer
    pH of a solution produced when an aqueous solution of \[pH\] 6 is mixed with an equal volume of an aqueous solution of \[pH\] 3 is about               [KCET 2001]

    A)                 3.3         

    B)                 4.3

    C)                 4.0         

    D)                 4.5

    Correct Answer: A

    Solution :

               \[pH=6\] means \[[{{H}^{+}}]={{10}^{-6}}M\]                    \[pH=3\] means \[[{{H}^{=}}]={{10}^{-3}}M\]                    After mixing,                    Total \[[{{H}^{+}}]=\frac{({{10}^{-6}}+{{10}^{-3}})}{2}\] \[=\frac{1.001\times {{10}^{-3}}}{2}\]                    \[=5.005\times {{10}^{-4}}\]                                     \[pH=4-\log 5.005\] ; \[pH=3.301\].


You need to login to perform this action.
You will be redirected in 3 sec spinner