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kostromin1100
@kostromin1100
June 2022
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50БАЛЛОВ! СРОЧНО!!!
1. Составьте схемы и уравнение, реакций, протекающих при электролизе: раствора иодида натрия и раствора сульфата цинка.
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abbasows1
NaI = Na(+1) + I(-1)
K(-): 2H2O + 2e = H2 + 2OH(-1)
A(+): 2I(-1) - 2e = I2(0)
2NaI + 2H2O = H2 + I2 + 2NaOH
ZnSO4 = Zn(+2) + SO4(-2)
K(-): Zn(+2) + 2e = Zn(0)
A(+): H2O - 2e = 2H(+1) + 1/2O2
ZnSO4 + H2O = 1/2O2 + H2SO4 +Zn
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Answers & Comments
K(-): 2H2O + 2e = H2 + 2OH(-1)
A(+): 2I(-1) - 2e = I2(0)
2NaI + 2H2O = H2 + I2 + 2NaOH
ZnSO4 = Zn(+2) + SO4(-2)
K(-): Zn(+2) + 2e = Zn(0)
A(+): H2O - 2e = 2H(+1) + 1/2O2
ZnSO4 + H2O = 1/2O2 + H2SO4 +Zn