₁ ₂ ₃ ₄ ₅
Ca⇒Ca(OH)₂⇒Ca(NO₃)₂⇒CaCO₃⇒CaCl₂⇒Ca₃(PO₄)₂
1. CaO+ H₂O⇒Ca(OH)₂
2.Ca(OH)₂+2HNO₃⇒Ca(NO₃)₂+2H₂O
3.Ca(NO₃)₂+ BaCO₃⇒CaCO₃+Ba(NO₃)₂
4.CaCO₃+2HCl⇒CaCl₂+H₂CO₃
5.CaCl₂+H₂PO₄⇒CaPO₄+2HCl
ионные уравнения:
2.Ca(OH)₂+2HNO₃⇒Ca(NO₃)₂+2H₂O
Ca²⁺+2OH⁻+2H⁺+2NO₃⁻⇒Ca²⁺ +2NO₃⁻+2H₂O
2OH⁻+2H⁺⇒2H₂O
3.Ca(NO₃)₂+ BaCO₃⇒CaCO₃+Ba(NO₃)₂
Ca²⁺+2NO₃⁻+BaCO₃⇒CaCo₃+Ba²⁺+2NO₃⁻
Ca²⁺+BaCO₃⇒CaCO₃+Ba²⁺
5.CaCl₂+H₂PO₄⇒CaPO₄+2HCl
Ca²⁺+2Cl⁻+2H⁺+PO₄²⁻⇒CaPO₄+2H⁺+2Cl⁻
Ca²⁺+2H⁺+PO₄²⁻⇒CaPO
Если брать округленные общепринятые значения, то
Na = 23
Ba = 137
S = 32
Cl = 35,5
Br = 80
Ar = 40
2Al+3Cl2 = 2AlCl3
4Al+3O2= 2Al2O3
<span><span> So3+CaO = СaSO4</span></span>
<span><span>Na2O + H2O =2NaOH </span></span>
вроде так.
4 KOH + 3 H2O2 + 2 Cr(OH)3 = 8 H2O + 2 K2CrO4