Question

H3PO4→ NaH2PO4 → Na2HPO4 → Na3PO4 → Ca3(PO4)2 Сделать следующие преобразования: Напишите уравнения реакций.

Answer 1

Ответ:P2O5+3H2O=2H3PO4

H3PO4+NaOH=NaH2PO4+H2O

NaH2PO4+NaOH=Na2HPO4

Na2HPO4+NaOH=Na3PO4

2Na3PO4+3CaCl2=Ca3(PO4)2+6NaCl

Объяснение:P2O5+3H2O=2H3PO4

H3PO4+NaOH=NaH2PO4+H2O

NaH2PO4+NaOH=Na2HPO4

Na2HPO4+NaOH=Na3PO4

2Na3PO4+3CaCl2=Ca3(PO4)2+6NaCl

Answer 2

1. H3PO4 (phosphoric acid) reacts with NaOH (sodium hydroxide) to form NaH2PO4 (sodium dihydrogen phosphate) and water (H2O): H3PO4 + NaOH -> NaH2PO4 + H2O

2. NaH2PO4 reacts with NaOH to form Na2HPO4 (disodium hydrogen phosphate) and water: NaH2PO4 + NaOH -> Na2HPO4 + H2O

3. Na2HPO4 reacts with NaOH to form Na3PO4 (trisodium phosphate) and water: Na2HPO4 + NaOH -> Na3PO4 + H2O

4. Na3PO4 reacts with CaCl2 (calcium chloride) to form Ca3(PO4)2 (calcium phosphate) and NaCl (sodium chloride): 2 Na3PO4 + 3 CaCl2 -> Ca3(PO4)2 + 6 NaCl

Note: These equations represent the stoichiometric ratios of the reactants and products, but they do not necessarily reflect the actual mechanism or conditions of the reactions.