CaC2 + 2H2O = Ca(OH)2 + C2H2; X1 = C2H2;
HgSO4
C2H2 + H2O --------- CH3COH; X2 = CH3COH;
t
CH3COH + Cu(OH)2 = CH3COOH + Cu2O + H2O; X3 = CH3COOH;
CH3COOH + CH3OH = CH3COOCH3 + H2O; x4 = CH3COOCH3 ;
SO2 +2H2S = 3S + 2H2O;
t
6H2O + 2Al ----- 2Al (OH)3 + 3H2; X1 = Al (OH)3
2Al (OH)3 +3 H2SO4 = Al2(SO4)3 + 6H2O; X2 = Al2(SO4)3 ;
Al2(SO4)3 + 3K2CO3 + 3H2O =2AL(OH)3 + 3K2SO4 + 3CO2