2 LiOH (aq) + CO₂ (g) → Li₂CO₃ (s) + H₂O (l)

This is an acid-base reaction (neutralization): LiOH is a base, CO₂ is an acid.

Reactants:

• LiOH – Lithium hydroxide
  • Other names: Lithium hydrate , LiOH , Lithium hydroxide anhydrous
  • Appearance: {{ubl ; Colourless-to-white hygroscopic crystals
• CO₂
  • Names: Carbon dioxide , {{plainlist| , CO2 ... show moreCarbonic acid gas , Dry ice , [CO2] , Carbonic anhydride , R-744 , E-290 , E 290 , E290 , Carbonic acid anhydride , Carbon-12 dioxide , Methanedione , Carbon oxide , CO₂ , [Note: Normal constituent of air (about 300 ppm)]. show less
  • Appearance: Colorless gas ; Odourless colourless compressed liquefied gas ; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.]

Products:

• Li₂CO₃ – Lithium carbonate
  • Other names: Dilithium carbonate , Carbolith , Cibalith-S ... show moreDuralith , Eskalith , Lithane , Lithizine , Lithobid , Lithonate , Lithotabs Priadel , Zabuyelite , Li2CO3 , Carbonic acid, dilithium salt , Carbonic acid, lithium salt show less
  • Appearance: Odorless white powder ; White powder
• 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