Question

В каком порядке выделяются металлы при электролизе раствора, содержащего ионы цинка, железа, свинца?​

Answer 1

Ответ: Например, из смеси ионов Сu2+, Ni2+, Рt2+ сначала восстановятся ионы Рt2+, затем Сu2+ и только потом – ионы Ni2+.

Answer 2

Electrolysis of a Solution Containing Zinc, Iron, and Lead Ions

When conducting electrolysis of a solution containing ions of zinc, iron, and lead, the order in which the metals are deposited can be determined by their standard reduction potentials. The metal with the highest reduction potential will be preferentially deposited first, followed by the metal with the next highest reduction potential, and so on.

The order of deposition during electrolysis is as follows:

1. Zinc (Zn): Zinc has a standard reduction potential of -0.76 V, which means it will be preferentially deposited first during electrolysis. - Source: - "Nov 19, 2014 ... , ... u2+. ,..."

2. Iron (Fe): Iron has a standard reduction potential of -0.44 V, which is higher than that of lead, so it will be deposited after zinc. - Source: - "5, , ..."

3. Lead (Pb): Lead has the lowest standard reduction potential among the three metals, at -0.13 V, so it will be deposited last during electrolysis. - Source: - " , ..."

In summary, the order of deposition during electrolysis of a solution containing zinc, iron, and lead ions is: Zinc (Zn) > Iron (Fe) > Lead (Pb) based on their standard reduction potentials.