Begin with 3 free Unit 15 practice problems. When you want more reps on pH, buffers, acids, bases, and titration ideas, premium unlocks Quick Sets of 3, Standard Sets of 9, and Extended Sets of 18 from this 171-problem bank.
3 Free Sample Problems
Work these 3 to find out whether the acid-base patterns are organized enough to use in calculation problems — or whether you need another pass before they are.
#4Weak Acid pH
Calculate the pH of a 0.100 M acetic acid solution. (Ka = 1.8 × 10^-5)
#5Conjugate Pairs
In the reaction HCO3- + H2O ⇌ H2CO3 + OH-, which pair is a conjugate acid-base pair?
#6Titration
25.0 mL of 0.200 M NaOH is titrated with 0.100 M HCl. What volume (mL) of HCl is required to reach the equivalence point?
Prep for the test — not just the homework
The 3 free problems show you where you stand. The full bank is how you close the gaps before the test.
Randomized every time — fresh problems that force real understanding, not answer memorization
Full worked solutions — see exactly where your setup went off track, not just whether you were right
171 problems across pH, Ka, Kb, buffers, and titration curves
Quick (3), Standard (9), or Extended (18) — use whatever fits your schedule
Filter by type — focus on calculation, concept, or multi-step problems first
Filter by difficulty — dial in easy, medium, or hard problems as you build up
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High School Chemistry · Unit 15 · Acids & Bases Practice