Calculating pH and pOH
Free to teach as-is — the teacher guide, student handout, and slides are included.
Free — we'll email you an access link. Google Docs format.
Objective
I can calculate pH and pOH values for aqueous solutions.
Part 1 of 4
Warm-up video
Professor Dave Explains · 9:01Vetted channel
We don't generate video — this one is by Professor Dave Explains on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
According to the Brønsted-Lowry definition, an acid donates a proton, while a base accepts a proton.
- 2
The pH of a solution is the negative log of the hydronium concentration, while pOH is the negative log of the hydroxide concentration.
- 3
A strong acid has a low pKa value and will completely deprotonate in solution, while a weak acid has a higher pKa and only partially deprotonates.
Part 3 of 4
Practice
12 questions
Define pH and explain its relationship to the hydronium ion concentration.
What is the pOH of a solution and how is it related to the hydroxide ion concentration?
Part 4 of 4
Exit ticket
Quick comprehension check
“The hydronium concentration of a solution is 1.0 × 10⁻³ M. Calculate the pH and pOH of this solution.”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
Slides
Ready to present
We'll ask for your email to send your access link — nothing else.
Teaching a group at a different level?
Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.
Adapt This Lesson