Q Moves. K Does Not.

You'll learnhow comparing the quotient Q against the constant K tells you which way a reaction runs.

A reversible reaction has two arrows and no favourite, so which way it runs comes down to one comparison: the quotient you can build right now, against the constant the temperature already fixed. Watch the compass — Q slides, K holds, and the arrow between them is the answer. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · Q < K → RIGHT · Q > K → LEFT · Q = K → EQUILIBRIUM · v4

one post that never moves, one marker that always does

Before you start

What you're looking at

A closed flask of N2O4 and NO2, and a number line with a fixed post for K and a sliding marker for Q.

The question

Which way does this particular mixture react, when the equation alone cannot tell you?

Step 1 / 12