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

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

  • question_answer
    A base is dissolved in water yields a solution with a hydroxide ion concentration of 0.05 \[mol\,\,litr{{e}^{-1}}.\] The solution is            [AFMC 1997]

    A)                 Basic     

    B)                 Acid

    C)                 Neutral

    D)                 Both A and B

    Correct Answer: A

    Solution :

               \[[O{{H}^{-}}]\]ion conc.\[=0.05\frac{mol}{l}\] \[=5\times {{10}^{-2}}\frac{mol}{l}\]                    \[pOH=-\log \,\,[O{{H}^{-}}]\]\[=-\log \,\,[5\times {{10}^{-2}}]\]                    \[pOH=1.30\];\[pH+pOH=14\]                                 \[pH=14-pOH\]\[=14-1.30=12.7\]


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