Electrolysis of KCl cdot MgCl_2 cdot 6H_2O gi | vedclass

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(C) The electrolysis of carnallite $(KCl \cdot MgCl_2 \cdot 6H_2O)$ in the molten state results in the deposition of $Mg$ at the cathode and $Cl_2$ ga

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$Mg$ and $Cl_2$

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(C) The electrolysis of carnallite $(KCl \cdot MgCl_2 \cdot 6H_2O)$ in the molten state results in the deposition of $Mg$ at the cathode and $Cl_2$ gas at the anode.$K^{+} + e^- 	o K$; $E^o = -2.93 \; V$$Mg^{2+} + 2e^- 	o Mg$; $E^o = -2.37 \; V$Since the reduction potential of $Mg^{2+}$ is higher (less negative) than that of $K^{+}$,$Mg^{2+}$ is preferentially reduced to $Mg$ at the cathode.

Electrolysis of $KCl \cdot MgCl_2 \cdot 6H_2O$ gives

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