Question

What is the pH of a solution with a concentration of 3.6 × 10-5 molar H3O+? Show, or explain, the work used to solve this problem.

Answer 1

Answer:

pH = 4.45

Explanation:

pH is negative logarithm of the hydrogen ion concentration.  

Given, hydronium ion concentration = 3.6 x 10⁻⁵

pH = - log[H₃O⁺] = - log(3.6 x 10⁻⁵) = 4.45

A pH below 7.0 means the solution is acidic. Neutral pH is at 7.0. For pH above 7.0 the solution is basic.  

Answer 2

Answer:

pH = 4.44

Explanation:

You take the negative logarithm of the hydronium ion concentration.

pH = -log[H₃O⁺] = -log(3.6 × 10⁻⁵) = 4.44