Without losing its concentration, ZnCl2 solution cannot be kept in contact with (a) Pb (b) Al (c) Au (d) Ag
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The answer is Al
In the given options only Al is the element which is present above the Zn in electrochemical series while others are present below it which means Zn will act as anode and lose electrons with them.
In the given options only Al is the element which is present above the Zn in electrochemical series while others are present below it which means Zn will act as anode and lose electrons with them.
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Answer: b) Al, 'Al' lies above 'Zn' in electrochemical series. which can displace the latter fron ZnCl2 solution. Therefore conc. of ZnCl2 will decrease when kept in 'Al' container.
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