N2 +3H2 = 2NH3 4NH3 +5O2 =4NO +6H2O N2 + O2 =2NO 4NO2 +2H2O + O2=4HNO3
K2SiO3+2HNO3=2KNO3+ H2SIO3 H2SIO3 -Нерастворим
2K(+)+ SiO3(-2)+2H(+)+NO3(-)=2K(+)+2NO3(-)+H2SIO3
SiO3(-2)+2H(+)=H2SIO3
Ba(NO3)2+K2SO4=BaSO4+2KNO3 BaSO4-Нерастворим
Ba(+2)+2NO3(-)+2K(+)+SO4(-2)=BaSO4+2K(+)+2NO3(-)
CxHyOz
1)M(CxHyOz)=4.5*28=126
2) m(C)=M(CxHyOz)*w(C)=126*0.5714=72
2) m(H)=M(CxHyOz)*w(H)=126*0.0476=6
3) m(O)=M(CxHyOz)*w(O)=126*0.381=48
4) n(X)=m(X)/M(X)=
C - 72/12=6
H - 6/1 = 6
O - 48/16=3
C6H6O3
Ca + 2HCl = CaCl2 + H2
Ca + 2H2O = Ca(OH)2 + H2
Ca + S = CaS
Ca + Cl2 = CaCl2
Ca + F2 = CaF2
Ca + Br2 = CaBr2
Ca + I2 = CaI2
S -> SO2 -> SO3 -> H2SO4 -> BaSO4
1. S + O2 = SO2
2. 2SO2 + O2 = 2SO3
3. SO3 + H2O = H2SO4
4. H2SO4 + BaCl2 = BaSO4 + 2HCl
Zn -> ZnO -> ZnCl2 -> Zn(OH)2 -> ZnO
1. 2Zn + O2 = 2ZnO
2. ZnO + 2HCl = ZnCl2 + H2O
3. ZnCl2 + 2NaOH = Zn(OH)2 + 2NaCl
4. Zn(OH)2 = ZnO + H2O