hidroliza

Ancica97's picture

U kom nizu sve soli u vodenom rastvoru podlijezu hidrolizi?

1) NaHCO3, NaCN, NH4Cl, KCl
2) NaH2PO4, KHSO4, KHCO3, Na2HPO4
3) KHCO3, Na3PO4, KCN, AlCl3
4) FeCl3, KNO3, KHSO4, NH4Cl

Zastooo?? Hvalaaa

buduci_student's picture

Pod 3

Ancica97's picture

zasto Na3PO4?

buduci_student's picture

H3PO4 + 3NaOH --> Na3PO4 + 3H2O

i obratno

Ancica97's picture

Daa.. ali zar Na3PO4   nije od jake baze i jake kiseline a to ne hidrolizuje? :D

buduci_student's picture

Na₃PO₄(s) ←→ 3 Na⁺(aq) + PO₄³⁻(aq)
PO₄³⁻(aqueous) + H₂O(liquid) ←→ HPO₄²⁻(aqueous) + OH⁻(aqueous)
HPO₄²⁻(aq) + H₂O(l) ←→ H₂PO₄⁻(aq) + OH⁻(aq)
H₂PO₄⁻(aq) + H₂O(l) ←→ H₃PO₄(aq) + OH⁻(aq)