Question

Calculate the ph of the solution [oh-] = 1x 10-11 m

a. 11.0

b. 12.0

c. 2.7

d. 3.0

Answer 1

d. 3.0

Step-by-step explanation:

First we calculate the pOH of the solution, using the following formula:

• pOH = -log[OH⁻]

• pOH = -log[1x10⁻¹¹ M]

• pOH = 11.0

Using the pOH we can calculate the pH of the solution, keeping in mind the relationship between pH and pOH:

• pH = 14.0 - pOH

• pH = 14.0 - 11.0

• pH = 3.0

The answer is option d.