:
1. KClO3 KClO4 + KCl.
2. (NH4)2S + K2Cr2O7 + H2O S + Cr(OH)3 + NH3 + KOH.
, , .
.
.
1. , :
K O3 K O4 + K .
2. -:
Cl+5 2 = Cl+7, Cl+5 ,
Cl+5 + 6 = Cl1, Cl+5 .
Cl+5(KClO3) , . - (-).
3. , . , , , . :
Cl+5 2 = Cl+7 3 (1)
Cl+5 + 6 = Cl 1 (2)
(1). KClO3 () (3 + 1 = 4). , :
4KClO3 = 3KClO4 + KCl.
:
3(NH4)2S2 + K2Cr2+6O7 + H2O = 3S0 + 2Cr+3(OH)3 + 2KOH + 6NH3
S2 2 = S0 3
Cr+6 + 6 = 2Cr+3 1