Mnemonic Note — Memory Aids for Carboxylic Acids — Notes

6 Key Mnemonics for OC-07

1. Acidity Ladder (CaPWAT):

Carboxylic > Phenol > Water > Alcohol > Terminal alkyne "Cats Play With All Toys" → pKa: 4–5, 10, 15.7, 16–18, 25

2. Halogen Acidity Series (Triple Cl Trumps):

"Triple Cl Trumps Double, Double Trumps Single, All Trump Methyl" Cl3CCOOH > Cl2CHCOOH > ClCH2COOH > CH3COOH

3. LiAlH4 vs NaBH4 (Lumberjack vs Nice-but-Half-hearted):

LiAlH4 = Lumberjack (chops through All — acids, esters, aldehydes, ketones) NaBH4 = Nice But Half-hearted (only aldehydes and ketones — "half" the job)

4. HVZ Conditions (HVZ = Halogen + Violet P + Zero-for-no-alpha-H):

"HVZ uses Halogen + Red P; needs an alpha-H; Veto for formic and benzoic" Zero alpha-H = zero HVZ reaction

5. SOCl2 Advantage (Gaseous Goodbye):

"SOCl2 says Goodbye by giving Gaseous byproducts" (SO2 gas + HCl gas) PCl5 leaves POCl3 behind (liquid) — unwanted guest

6. Soda Lime Formula (NaOH + CaO = Soap + Stone):

"Soda lime = NaOH (Soda) + CaO (lime stone)" Result: RCOONa + NaOH/CaO → R–H + Na2CO3 (loses one carbon)