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okriton
@okriton
July 2022
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Написать электронное уравнение! 1)Na2SO3+K2Cr2O7+H2SO4=Na2SO4+Cr2(SO4)3+K2SO4+H2O
2)I2+H2O=HIO3+HI
3)MnSO4+PbO2+HNO3=HMnO4+Pb(NO3)2+PbSO4+H2O
4) KCIO3=KCI+O2
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Ximik666
1)
K2Cr2O7
+
3
H2SO3
+
H2SO4
→
Cr2
(SO4)
3
+
K2SO4
+
4
H2O
Cr(6) +
3 e-
→ Cr(3)
SI(5)
-
2 e-
→
S(6)
2)
HIO3+5HI-->3H2O+3I2 2I(+5) +10e-->I2(0) [1]
2I(-1) -2e-->I2(0) [5]
3)
2MnSO4+5PbO2 +6HNO3 = 2HMnO4+ 3Pb(NO3)2 +2PbSO4+2H2O
5Pb(+4) +10e = 5Pb(+2)
2Mn(+2) - 10e = 2Mn(+7)
4)2KCIO3=2KCI+3O2
СI+6e→
СI
2О-4e→2О
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Answers & Comments
2)HIO3+5HI-->3H2O+3I2 2I(+5) +10e-->I2(0) [1]
2I(-1) -2e-->I2(0) [5]
3)2MnSO4+5PbO2 +6HNO3 = 2HMnO4+ 3Pb(NO3)2 +2PbSO4+2H2O
5Pb(+4) +10e = 5Pb(+2)
2Mn(+2) - 10e = 2Mn(+7)
4)2KCIO3=2KCI+3O2
СI+6e→СI
2О-4e→2О