Strong & Weak

How completely acids ionise

An interactive lesson with 5 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Strong acids ionise completely; weak acids set up an equilibrium with Ka.
• pKa = −log Ka: smaller pKa, stronger acid.
• Strength ≠ concentration.

Steps

1. All or a little
2. Which is stronger?
3. From pKa to Ka
4. Strong is not concentrated
5. Rank the acids