4) CaO + H2O = Ca(OH)2
BaO + H2O = Ba(OH)2
Na2O + H2O = 2NaOH
K2O + H2O = 2KOH
CO2 + H2O = H2CO3
SO2 + H2O = H2SO3
SO3 + H2O = H2SO4
N2O5 + H2O = 2HNO3
P2O5 + 3H2O = 2H3PO4
CaO +CO2 = CaCO3
MgO + CO2 = MgCO3
BaO + SO3 = BaSO4
Na2O + SO3 = Na2SO4
CaO + 2HNO3 = Ca(NO3)2 + H2O
K2O + 2HCl = 2KCl + H2O
3MgO + 2H3PO4 = Mg3(PO4)2 + 3H2O
CO2 + 2KOH = K2CO3 + H2O
SO2 + Ca(OH)2 = CaSO3 + H2O
SO3 + Ba(OH)2 = BaSO4 + H2O
3) N(+2)O(-2), N(+3)O(-2), N(+)O(-2), N(+5)O(-2), N(+4)O(-2), H(+)N(+3)O(-2),
H(+)N(+5)O(-2), Fe(+3)N(+5)O(-2), N(-3)H(+), N(-3)H(+)O(-2)H(+), K(+)Mn(+7)O(-2), Na(+)Mn(+6)O(-2), K(+)Cr(+6)O(-2)
1) Оксиды: BeO, As2O5, SeO3, K2O
Основания: Sr(OH)2, Ba(OH)2, Ga(OH)3
Кислоты: H3BO3, HNO3, HPO3, HI
Соли: CaBr2, MgCO3, Al2(SO4)3, Na3PO4
2) Na Ca Cr
Na2O CaO Cr2O3
NaOH Ca(OH)2 Cr(OH)3
NaCl CaCl2 CrCl3
Na2SO4 CaSO4 Cr2(SO4)3
NaNO3 Ca(NO3)2 Cr(NO3)3