A Trace Always Remains

You'll learnhow the size of K sets equilibrium position without saying the reaction is complete or fast.

K is a location, not a verdict and not a clock. A huge K puts the equilibrium far over on the product side — it never puts it at the end of the road, and it never says when you arrive. Watch the mistake happen twice: the reactant sliver rounded away to zero, and a big number mistaken for a fast one. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · A ⇌ B · K = 1×10⁸ · 500 vs 0.002 · CH-U7-PH9 · v4

where the equilibrium sits, and nothing else

Before you start

What you're looking at

A logarithmic K ruler with two reactions pinned on it at K = 500 and K = 0.002, and a flask under each.

The question

Given only those two numbers, what can you justifiably say about the two flasks at equilibrium?

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