AP Chemistry / Unit 7: Equilibrium
7.8 Representations of Equilibrium
Notes
Particle diagrams at equilibrium show the same ratio of species over time. You can calculate $K$ (or $Q$) by counting particles.
Practice
A diagram shows 6 B and 2 A for $A\rightleftharpoons B$ at equilibrium. $K=$
$\displaystyle \frac{6}{2}$.
Two diagrams of the same system at later times look identical. This suggests:
Constant composition.
A diagram at equilibrium can have:
Both are present.
Ready for more? Take the Unit 7 test.