- -, , .
200 C , . , . . Fe23, Fe34. .
, Fe3N, , FeP, Fe2P Fe3P, , Fe3C, , , , FeSi. . . (II):
Fe + 2HCl = FeCl2 + H2Fe + H2SO4 = FeSO4 + H2 Fe , Fe()2. Fe2O3 , Fe()3 :2Fe()3 + 3H2SO4 = Fe2(SO4)3 + 6H2O Fe()3 :
Fe()3 + = [Fe()4]
. - - . . , (III) , ..
. .
́
. 30 ( CuCo2S4, Co3S4, CoAsS)
, . , . H2S Cu, Pb, Bi, Fe(II) Fe(III) 3 Fe(OH)3 CaHAsO4. : 2Cl2 + NaClO + 4NaOH + H2O = 2Co(OH)3↓ +5NaCl. ()3 ; 34 .
, -, . , 300C . , , , . .
F3. 3 HF, F2. . l2 Br2.
. SO4, l2, (NO3)2.
. , . .
, , . .