Chemistry / Unit 10 Chem 1749 short lesson, about 20 seconds
Equilibrium Constant Expression Construction
Captions available
The idea
An equilibrium constant expression is products' equilibrium concentrations, each raised to its coefficient, divided by reactants' equilibrium concentrations, each raised to its coefficient.
In practice
For N2 + 3 H2 ⇌ 2 NH3, K = [NH3]²/([N2][H2]³), coefficients becoming exponents.
Where people slip
Building the expression from the equation's coefficients before it is balanced gives a wrong expression entirely.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
- 1752K Is Dimensionless
- 1755K Depends Only on Temperature
- 1758Homogeneous vs. Heterogeneous Equilibria
- 1761Reaction Quotient Q Defined
- 1768The ICE Table Method
- 1774Kp vs. Kc Relationship
- 1818Autoionization of Water and Kw
- 1835Weak Acid Equilibrium and Ka
- 1838Weak Base Equilibrium and Kb
- 1907Solubility Product Ksp Defined
- 1928Complex Ion Formation and Formation Constant Kf
- 2130ΔG° Relates to K
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