Without losing its concentration, $\mathrm{ZnCl}_{2}$ solution cannot be kept in contact with\

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Professor PC Thomas Classes · Answer

(b) : Only 'Al' lies above ' Zn ' in electrochemical series, which can displace Zn from $\mathrm{ZnCl}_{2}$ solution. Therefore, conc. of $\mathrm{ZnCl}_{2}$ will decrease when kept in 'Al' container.\ $2 \mathrm{Al}+3 \mathrm{ZnCl}_{2} ightarrow 2 \mathrm{AlCl}_{3}+3 \mathrm{Zn}$