(NH4)2SO4 + Ca(OH)2 → 2 NH4OH + CaSO4 - Balanced Equation

This is an acid-base reaction (neutralization): (NH4)2SO4 is an acid, Ca(OH)2 is a base.

Reactants:

• (NH4)2SO4 – Ammonium tetraoxosulfate (VI)
  • Other names: Ammonium sulphate , Ammonium sulfate , Ammonium sulfate (2:1) ... show moreDiammonium sulfate , Sulfuric acid diammonium salt , Mascagnite , Actamaster , Dolamin , (NH4)2SO4 , Sulfuric acid, diammonium salt , Sulfuric acid ammonium salt (1:2) show less
  • Appearance: Fine white hygroscopic granules or crystals.
• 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:

• NH4OH
  • Names: Ammonium hydroxide , Ammonia solution , Ammonium hydroxide (10%-35% solution) ... show moreAmmonia , Household ammonia , Ammonia water , Ammonia liquor , Aqueous ammonia , E527 , NH4OH , Ammonia aqueous , Aqua ammonia , Ammonium hydrate , Ammonia aqueous solution (10-35%) show less
  • Appearance: Colourless liquid ; Very volatile colourless ammonia solution in water with pungent odour
• CaSO4
  • Names: Calcium sulfate , Plaster of Paris , Drierite ... show moreGypsum , Calcium sulfate (anhydrous) , Anhydrous calcium sulfate , Anhydrous gypsum , Anhydrous sulfate of lime , Calcium salt of sulfuric acid , CaSO4 , Calcium sulphate , Calcium sulfate anhydrous , Sulfuric acid, calcium salt (1:1) , [Note: Gypsum is the dihydrate form and Plaster of Paris is the hemihydrate form.] show less
  • Appearance: White solid ; White hygroscopic powder or crystalline powder ; Odorless, white powder or colorless, crystalline solid. [Note: May have blue, gray, or reddish tinge.]