6. Chemical Equilibrium
The pH Scale
Multiple Choice
What is the hydronium ion concentration in a solution having a pOH of 3.62?
A
3.8 × 10−5 M
B
4.2 × 10−11 M
C
3.8 × 10−4 M
D
2.6 × 10−11 M
E
5.1 × 10−10 M
Verified step by step guidance1
Understand the relationship between pH, pOH, and the ion product of water: pH + pOH = 14.
Calculate the pH of the solution using the given pOH value: pH = 14 - pOH.
Use the formula for hydronium ion concentration: [H₃O⁺] = 10^(-pH).
Substitute the calculated pH value into the formula to find the hydronium ion concentration.
Compare the calculated hydronium ion concentration with the given options to identify the correct answer.
