Question

What's the pH of an acid that has a hydronium ion concentration of 1.00 x 10⁻¹⁰?

Answer 1

Solution:

[H₃O⁺] = 1.00×10^-10 M

To calculate the pH of a solution, use the equation:

pH = −log[H₃O⁺]

pH = −log[1.00×10^-10] = 10.00

pH = 10.00

Answer: pH = 10.00