NEET Chemistry Equilibrium / साम्यावस्था NEET PYQ-Ionic Equilibrium

  • question_answer
    Which of the following statements about pH and \[{{H}^{+}}\] ion concentration is incorrect?           [AIPMT 2000]

    A)  Addition of one drop of concentrated HCl in \[N{{H}_{4}}OH\] solution decreases pH of the solution

    B)       A solution of the mixture of one equivalent of each of \[C{{H}_{3}}COOH\] and NaOH has a pH of 7

    C)       pH of pure neutral water is not zero

    D)  A cold and cone. \[{{H}_{2}}S{{O}_{4}}\] has lower \[{{H}^{+}}\] ion concentration than a dilute solution of \[{{H}_{2}}S{{O}_{4}}\]

    Correct Answer: B

    Solution :

     is weak acid while NaOH is strong base, so one equivalent of NaOH cannot be neutralized with one equivalent of . Hence, one equivalent of each does not have pH value as 7.
    As the NaOH is a strong base. The solution will be basic having a pH more than 7.


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