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

  • question_answer
    Given a 0.1M solution of each of the following. Which solution has the lowest \[pH\]      [MNR 1987]

    A)                 \[NaHS{{O}_{4}}\]          

    B)                 \[N{{H}_{4}}Cl\]

    C)                 \[HCl\] 

    D)                 \[N{{H}_{3}}\]

    Correct Answer: C

    Solution :

               Because it is a strong acid.                    \[{{H}^{+}}={{10}^{-1}}\]                                 \[pH=-\log \,\,[{{H}^{+}}]\] \[=-\log \,\,[{{10}^{-1}}]\];\[pH=1\].


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