. . , .
.
Cr2O . Cr3+.
, (+6) (+3). (2). , (2) , . :
2 | + 3 = ,
3 | S2 2 =S0.
:
K2Cr2O7 + 4H2SO4 + 3H2S = 3S¯ + Cr2(SO4)3 + K2SO4 + 7H2O.
: |
5.
. . , . . Cr2O . Cr3+. , (+6) (+3). (2). , (2) , . :
2 | + 3 = , 3 | S2 2 =S0. : K2Cr2O7 + 4H2SO4 + 3H2S = 3S¯ + Cr2(SO4)3 + K2SO4 + 7H2O.
: 2015-10-01; !; : 1871 | : : , . |