Question

Potassium sulfate was added to water and the solution was found to have a poH of 1.43. What is the pH of the salt solution?

a. pH = 12.57
b. pH = 1.43
c. pH = 14 - 1.43
d. pH = 2.57

Answer 1

The pH of the potassium sulfate solution can be calculated using the relationship pH + pOH = 14.00. With the given pOH of 1.43, the pH is 14.00 - 1.43, resulting in a pH of 12.57.

Step-by-step explanation:

To find the pH of the salt solution when given the pOH, we use the relationship that pH + pOH = 14.00 at 25 °C for an aqueous solution. Since the pOH of the solution is given as 1.43, we can calculate the pH as follows:

pH = 14.00 - pOH

pH = 14.00 - 1.43

pH = 12.57

Therefore, the pH of the potassium sulfate solution is 12.57, which corresponds to choice a.