1) Sb(OH)3 +3 HCl = SbCl3 + 3H2O
Sb(OH)3 +2NaOH = Na[Sb(OH)4]
2) V+5)O(-2), Ca(+2)O(-2)H(+)Cl(-)
3) a)Na -> Na2O -> NaOH -> NaCl
4Na + O2 = 2Na2O
Na2O + H2O = 2NaOH
NaOH + HCl = NaCl + H2O
б) S->SO2-> H2SO3 -> Na2SO3
S + O2 = SO2
SO2 + H2O = H2SO3
H2SO3 + Na2O = Na2SO3 + H2O
4) 2K + Cl2 = 2KCl
2K + 2HCl =2 KCl + H2
KOH + HCl = KCl + H2O
K2O +2 HCl = 2KCl + H2O