2Ca + O2 = 2CaO
2Al + 6HCl (разб.) = 2AlCl3 + 3H2↑
Ba + 2H2O = Ba(OH)2 + H2↑
3Ag + 4HNO3 (разб.) = 3AgNO3 + NO↑ + 2H2O
2Li + 2H2O = 2LiOH + H2
Zn + H3PO4 (конц., гор.) = ZnHPO4↓ + H2↑
O2 + 4Cu = 2Cu2O
8K + 5H2SO4 = 4K2SO4 + H2S + 4H2O
Au+H2O- не пойдет
3O2 + 4Al = 2Al2O3
Sr + 2H2O = Sr(OH)2↓ + H2↑
2Pb + O2 = 2PbO
Fe + S = FeS
Ca + Br 2 = CaBr2
Ba + Cl 2 = BaCl2
N2 + 6Na = 2Na3N
2Li + H2 = 2LiH
2 H2+O2=2Н2О
Zn + 4HNO3 (конц., гор.) = Zn(NO3)2 + 2NO2↑ + 2H2O
4Fe + 3O2 = 2Fe2O3
8Al + 30HNO3 (разб.) = 8Al(NO3)3 + 3N2O + 15H2O
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