PO₄ + 2 Na + H₂O → OH + Na₂HPO₄

This is an oxidation-reduction (redox) reaction:

Reactants:

• PO₄
• Na
  • Names: Sodium , Na , Element 11 , Natrium
  • Appearance: Silvery solid in various forms
• 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

Products:

• OH
• Na₂HPO₄ – Sodium hydrogen phosphate
  • Other names: Disodium phosphate , Disodium hydrogen orthophosphate , Sodium phosphate dibasic ... show moreDibasic sodium phosphate , Disodium hydrogen phosphate , Disodium hydrogenphosphate , Dibasic sodium phosphate anhydrous , Dibasic sodium phosphate, anhydrous , Disodium acid phosphate , Disodium hydrogen monophosphate , Disodium hydrogen phosphate, anhydrous , Phosphoric acid, disodium salt, anhydrous , Phosphoric acid, sodium salt (1:2) , Secondary sodium phosphate , Sodium phosphate dibasic anhydrous , Sodium phosphate, dibasic , Sodium phosphate, dibasic anhydrous , Sodium phosphate, dibasic, anhydrous , Sodium phosphate,dibasic,anhydrous , Disodium acid orthophosphate , Disodium monohydrogen phosphate , Na2HPO4 , Disodium orthophosphate , Anhydrous dibasic sodium phosphate , E339ii show less
  • Appearance: White crystalline solid ; White or colourless hygroscopic crystals or powder