1) , .
Ca+H2=CaH2 ;
Ca+Cl2=CaCl2 - ;
2Ca+O2=2CaO - ( );
Ca+S=CaS - ;
3Ca+2P=Ca3P2 - ;
Ca+2C=CaC2 - ;
2) :
, , :
H2+Cl2=2HCl
2H2+O2=2H2O
H2+S=H2S
3H2+N2=2NH3
, , , .
, , , :
S + O2 = SO2,
C + O2 = CO2.
. , , . G , :
2F2+O2=2OF2
, , :
S+3F2=SF6
C+2Cl2=CCl4
, , , , , :
H2 + X2 = 2HX (X = F, Cl)
2H2 + O2 = 2H2O,
H2 + S = H2S,
3H2 + N2 = 2NH3.
. . .
. :
CuO + H2 = Cu + H2O
HgO + H2 = Hg + H2O
:
Zn + H2SO4 = ZnSO4 + H2
.
, , .
, () , ( , -).
, , , , . (-) . .