[Campbell Biology P.101] What is the pH of a solution with a hydrogen ion concentration H+ o... | Practice Question

What is the pH of a solution with a hydrogen ion concentration H+ of 10^-3 M?

  • A: 3
  • B: 11
  • C: -3
  • D: 7

Explanation

The pH of a solution is defined as the negative logarithm base 10 of the hydrogen ion concentration H+ . Therefore, pH = -log 10^-3 = 3.