Acids and Bases - Calculating pH

Worked Chemistry Problems

pH is a measure of acidity.
pH is a measure of acidity.
Question

What is the pH of a solution with [H+] = 1 x 10-6 M.

Solution

pH is calculated by the formula

pH = - log [H+]

Substitute [H+] with the concentration in the question.

pH = - log (1 x 10-6)
pH = -(-6)
pH = 6

Answer

The pH of the solution is 6.

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Helmenstine, Todd. "Acids and Bases - Calculating pH." ThoughtCo, May. 14, 2014, thoughtco.com/acids-and-bases-calculating-ph-problem-609586. Helmenstine, Todd. (2014, May 14). Acids and Bases - Calculating pH. Retrieved from https://www.thoughtco.com/acids-and-bases-calculating-ph-problem-609586 Helmenstine, Todd. "Acids and Bases - Calculating pH." ThoughtCo. https://www.thoughtco.com/acids-and-bases-calculating-ph-problem-609586 (accessed February 22, 2018).