Chemical Equilibrium and Le Chatelier's Principle
by Froga
How reversible reactions settle into a dynamic balance, and how concentration, temperature and pressure push that balance one way or the other. Written for anyone who wants to go past memorizing the shift rules and understand why they work.
You're previewing this room. Log in or create a free account to answer the questions and track your progress.
Study material
A chemical equilibrium is dynamic, not static. Once a reversible reaction reaches equilibrium, molecules are still converting between reactants and products in both directions, at matching rates. Because those two rates are now equal, the measurable amounts of each substance stop changing, even though individual molecules keep reacting. A reaction that only ever runs one way never reaches this state.
At chemical equilibrium in a closed system, which statement correctly describes what is happening?
multiple choice
AThe forward and reverse reaction rates are equal, though the concentrations of reactants and products may differ
BThe concentrations of reactants and products are always exactly equal
CAll chemical activity has stopped completely
DThe reaction proceeds only in the forward direction from that point on
Equilibrium is about rates matching, not amounts matching.
Log in to answer
Ready to test yourself?
Sign up free to answer, score points, and build your streak.