Zn(OH)₂ (s) + H₂SO₄ (aq) → ZnSO₄ (aq) + 2 H₂O (l)

This is an acid-base reaction (neutralization): Zn(OH)₂ is a base, H₂SO₄ is an acid.

Reactants:

• Zn(OH)₂
  • Names: Zinc hydroxide , Zinc(II) hydroxide
  • Appearance: White powder
• H₂SO₄ – Sulfuric acid
  • Other names: Oil of vitriol , Sulfuric acid, concentrated (> 51% and < 100%) , H2SO4 ... show moreSulphuric acid , Battery acid , Hydrogen sulfate , [SO2(OH)2] , [S(OH)2O2] , Sulfuric acid (aqueous) show less
  • Appearance: Clear, colorless liquid ; Odourless colourless oily hygroscopic liquid ; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]

Products:

• ZnSO₄ – Zinc sulfate
  • Other names: White vitriol , Goslarite , Zinc sulfate (1:1) ... show moreZinc sulphate , ZnSO4 , Zinc(II) sulfate , Zinc(2+) sulfate , Zinc sulfate anhydrous , Zinc sulfate, anhydrous , Zinc sulfate (anhydrous) , Zinc sulphate anhydrous , Zinc sulphate, anhydrous , Sulfuric acid, zinc salt (1:1) show less
  • Appearance: White powder ; Colourless hygroscopic crystals
• 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