What is the pH of a solution in which [H+] = 1 x 10^-5 mol/L?
Answer and explanation
Correct answer: B. 5
- Step 1: pH = -log[H+].
- Step 2: pH = -log(10^-5) = 5.
Answer
5.
Why not the others: 9 is the pOH at 25 C; -5 loses the minus sign in the definition; 12 has no basis in the definition.
Practise more Acids and bases.
Free questions with an explanation for every one, and full timed Tawjihiya Bahrain (Secondary School Certificate) mock tests.