V(H3PO4) : V(NaOH)= Cн(NaOH) : Cн(H3PO4)
CaCl₂ = Ca²⁺ + 2Cl⁻
(NH₄)₂CO₃ = 2NH₄⁺ + CO₃²⁻
CH₃COOK = CH₃COO⁻ + K⁺
Ba(NO₃)₂ = Ba²⁺ + 2NO₃⁻
FeCl₃ = Fe³⁺ + 3Cl⁻
(NH₄)₂S = 2NH₄⁺ + S²⁻
KNO₃ = K⁺ + NO₃⁻
NaNO₂ = Na⁺ + NO₂⁻
KJ = K⁺+ J⁻
Na₂SO₃ = 2Na⁺ + SO₃²⁻
Na₃PO₄ = 3Na⁺ + PO₄³⁻
Na₂SiO₃ = 2Na⁺ + SiO₃²⁻
Na₂SO₄ = 2Na⁺ + SO₄²⁻
2KMnO4=MnO2+K2MnO4+O2 1)n(O2)=5.5/22.4=0.25 моль 2)n(KMnO4)=n(O2)*2=0.5 моль 3)m(KMnO4)=0.5*158=79 г