Question

Paul determines that the hydrogen ion concentration of his unknown solution is 3.60×10−5M. What is the pH of the solution?

a. 4.44.
b. 5.44.
c. 6.44.
d. 7.44.

Answer 1

The pH of a solution with a hydrogen ion concentration of 3.60×10−5M is calculated using the formula pH = -log[H3O+], giving a pH of 4.44.

Step-by-step explanation:

To calculate the pH of a solution when given the hydrogen ion concentration, you can use the formula pH = -log[H3O+]. With the hydrogen ion concentration of 3.60×10−5M, the calculation would look like this:

pH = -log(3.60×10−5)

Using a calculator, we find that:

pH = 4.44

Therefore, the pH of the solution is 4.44, making the correct answer a. 4.44.