Question

if the ph of a solution is 3.9, what would the poh be?
a. 10.1
b. -3.9
c. 3.9
d. 17.9

Explanation:

Step1: Recall the pH - pOH relationship

pH + pOH = 14

Step2: Solve for pOH

pOH = 14 - pH
Given pH = 3.9, then pOH = 14 - 3.9 = 10.1

Answer:

A. 10.1