2 CH3COOH + Ca(OH)2 → Ca(CH3COO)2 + 2 H2O

This is an acid-base reaction (neutralization): CH3COOH is an acid, Ca(OH)2 is a base.

Reactants:

• CH3COOH – Acetic acid , Ethanoic acid
  • Other names: Vinegar (when dilute); Hydrogen acetate; Methanecarboxylic acid , Methanecarboxylic acid , CH3-COOH ... show moreAcetic acid, glacial , HOAc , Vinegar , Essigsäure , Glacial acetic acid , Ethanoate , Acide acétique , Ethylic acid , Ethoic acid , Aceticum acidum , Ethanoat , E260 , CH3COOH , Acetic acid (aqueous) , [Note: Can be found in concentrations of 5-8% in vinegar.] show less
  • Appearance: Colourless liquid ; Colourless liquid with pungent odour ; Colorless liquid or crystals with a sour, vinegar-like odor. [Note: Pure compound is a solid below 62°F. Often used in an aqueous solution.]
• Ca(OH)2 – Calcium hydroxide
  • Other names: {{ubl , Slaked lime , Calcium hydrate ... show moreCaustic lime , Hydrated lime , Ca(OH)2 , Hydralime , Calcium dihydroxide show less
  • Appearance: White powder ; Colourless crystals or white powder ; White, odorless powder. [Note: Readily absorbs CO2 from the air to form calcium carbonate.]

Products:

• Ca(CH3COO)2 – Calcium acetate
  • Other names: Acetate of lime , Calcium ethanoate , Calcium diacetate ... show moreEliphos , Phoslo , Phoslo Gelcaps , Phoslyra , Lime acetate , Acetate OF lime , Lime pyrolignite , Brown acetate of lime , Gray acetate of lime , Calcium(II) acetate , Ca(OAC)2 , Acetic acid, calcium salt show less
  • Appearance: White solid | hygroscopic ; White-to-brown or grey crystals with characteristic odour
• H2O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas