Chemistry / Unit 10 Chem 1752 short lesson, about 20 seconds
K Is Dimensionless
Captions available
The idea
An equilibrium constant is treated as dimensionless, since each concentration or pressure term is really a ratio to a reference standard state that cancels its units.
In practice
Chemists report K = 4.2, not K = 4.2 mol²/L², even though concentrations carried units when substituted.
Where people slip
Attaching units to a reported K value misrepresents the activity-based convention behind the expression.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
- Nothing yet depends on this.
Something wrong in this lesson? Flag it · Sources for Chemistry