What's Left Over Sets the pH

You'll learnhow to cancel an acid against a base in moles, and how to name the species that is left holding the pH.

Three mixtures on this page, all of them an acid poured into a base, and only one of them ends at pH 7. What separates them is what survives the cancelling. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · MOLES, NOT VOLUMES · BUFFER = HA + A⁻ · v2

they cancel mole for mole · and what survives sets the pH

Before you start

What you're looking at

Two bars, one of acid and one of base, cancelling each other mole for mole.

The question

When does mixing an acid with a base actually land on pH 7?

Step 1 / 12