MDCAT Chemistry MCQ #2233

Comparing 0.1 M HCl and 0.1 M CH3COOH, the HCl solution has a much lower pH. This difference in acidity is because:

MDCAT Chemistry MCQ #2233

  1. Question 1

    Q1. Comparing 0.1 M HCl and 0.1 M CH3COOH, the HCl solution has a much lower pH. This difference in acidity is because:

    • A) HCl has a lower Ka value than acetic acid
    • B) HCl ionizes completely while acetic acid ionizes partially
    • C) Acetic acid produces more H+ ions than HCl
    • D) HCl forms a buffer while acetic acid does not

    Answer: HCl ionizes completely while acetic acid ionizes partially

    Explanation: Strong acids like HCl ionize completely (100%), whereas weak acids like CH3COOH only partially ionize in aqueous solutions.