A.2FeCl3+Cu=2FeCl2+CuCl2 | B. |
C.4Fe(OH)2+O2+2H2O= 4Fe(OH)3 | D.CaCO3+2HCl=CaCl2+H2O+CO2↑ |
A.Na2O2 +2HCl= 2NaCl+H2O2 |
B.Ag2O+ H2O2=2Ag+O2↑+ H2O |
C.2 H2O2 =" 2" H2O+O2↑ |
D.3 H2O2+Cr2(SO4)3+10KOH=2K2CrO4+3K2SO4+8 H2O |
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