engineering chemistry MCQ #3062

The pH of a solution is 4. The concentration of H+ ions is

engineering chemistry MCQ #3062

  1. Question 1

    Q1. The pH of a solution is 4. The concentration of H+ ions is

    • A) 10^-4 M
    • B) 10^-10 M
    • C) 10^-7 M
    • D) 10^-2 M

    Answer: 10^-4 M

    Explanation: pH = -log[H+], so [H+] = 10^-pH = 10^-4 M