13.3Shifting Equilibria: Le Châtelier’s Principle
Section · module m71835Read §13.3 at OpenStax ↗
Study this section
Written from the section, each card quoting the span it came from. The ones you miss come back sooner.
What this needs
Learn these first — this section will not make sense without them.
Predicting a volume-change shift means substituting a scaled pressure like 3P into Qp and simplifying (3P)^2 = 9P^2 to see whether the scale factor cancels — the NO2/NO/O2 example only shows a net shift because the exponents on reactant and product sides differ, which is invisible without exponent rules.
- Alongside5.6Rational Functions
Le Châtelier's concentration-stress reasoning is really rational-function monotonicity: adding reactant grows the denominator of Qc so Qc falls below Kc, removing product shrinks the numerator so Qc falls — the chemistry names the shift, the algebra names why a rational expression moves that way.
What this touches
Algebra that turns up here. Not a blocker, but this is where you will see it used.
No algebra turns up here. Most of the descriptive sections need none.