Carnallite on electrolysis gives :

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(D) Carnallite is a double salt with the chemical formula $KCl \cdot MgCl_2 \cdot 6H_2O$. When fused carnallite is subjected to electrolysis,it underg

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$Mg$ and $Cl_2$

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(D) Carnallite is a double salt with the chemical formula $KCl \cdot MgCl_2 \cdot 6H_2O$. When fused carnallite is subjected to electrolysis,it undergoes decomposition. The magnesium ions $(Mg^{2+})$ are reduced at the cathode to form magnesium metal $(Mg)$,and chloride ions $(Cl^-)$ are oxidized at the anode to form chlorine gas $(Cl_2)$. The reaction is: $KCl \cdot MgCl_2$ $\xrightarrow{	ext{electrolysis}} K^+ + Mg^{2+} + 3Cl^-$ $ightarrow Mg + Cl_2 + KCl$.

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