Mnemonic 1: "CITCK" — What changes K?

Only Temperature Changes K → Remember: Temperature is the Tyrant (controls K); everything else is a guest.

• Concentration → shifts position, NOT K
• Inert gas → no shift (const. V) or shifts position (const. P), NOT K
• Pressure → shifts position, NOT K
• Catalyst → nothing changes, NOT K

Mnemonic 2: "QFBEK" — Q Comparison Rule

• Q < K → Forward (not enough products yet)
• Q > K → Backward (too many products)
• Q = K → Equilibrium (done)

Phrase: "Quite Formidable Balances Everything at K"

Mnemonic 3: "Salt pH — Weak Side Wins"

• Strong + Strong → Neutral (pH = 7)
• Weak acid + Strong base → Basic (weak acid "loses" → basic solution)
• Strong acid + Weak base → Acidic (weak base "loses" → acidic solution)

Mnemonic 4: "HH — pH = pKa + log(Salt/Acid)" → "Salt Over Acid" = SOA

Henderson-Hasselbalch: pH = pKa + log(Salt/Acid) — SOA (like "sow the seed")

Mnemonic 5: Ksp Formula Pattern

• 1:1 (AgCl) → Ksp = $s^{2}$ → s = √Ksp
• 1:2 ($PbI_{2}$, Ca(OH)_{2}) → Ksp = 4$s^{3}$ → s = (Ksp/4)^(1/3)
• 1:3 → Ksp = 27$s^{4}$

Memory: "One-One Square; One-Two Four-Cube; One-Three Twenty-Seven-Fourth"

Mnemonic 6: Acid-Base Theory Scope

"Arrhenius is Aqueous, Bronsted-Lowry is Broader, Lewis is Largest" — ABL (A < B < L in scope)