Question

What is the ph of a HCl solution with a concentration of 2.51x10^-5M

Answer 1

pH = 4.6

Step-by-step explanation:

As hydrochloric acid (HCl) is a strong acid, the molar concentration of H⁺ species is the same as the molar concentration of the HCl solution. In other words:

• [H⁺] = 2.51x10⁻⁵ M

With the information above in mind we can calculate the pH:

• pH = -log[H⁺]

• pH = -log(2.51x10⁻⁵ M)

• pH = 4.6