Question

write the reaction which occur during electrolysis of molten NACL​

Answer 1

Answer:

Electrolysis of Molten NaCl

If sodium chloride is melted (above 801 °C), two electrodes are inserted into the melt, and an electric current is passed through the molten salt, then chemical reactions take place at the electrodes. ... Chlorine gas bubbles out of the melt above the anode.❤

Answer 2

Answer:

Half-reaction at the cathode:

$2Na^{+}(l) + 2e^{-}$→ $2Na(l)$

Half reaction at the anode:

$2Cl^{-}(l)$→ $Cl_{2}(g)+2e^{-}$

Explanation:

• When you melt solid sodium chloride ($NaCl$), you get molten.
• On further breaking, we get:

$Na^{+} (l)$ and $Cl^{-}(l)$, Sodium ions and Chloride ions.

• In electrolysis, reduction and oxidation take place at the electrodes- anode and cathode.
• At anode oxidation takes place.
• At cathode reduction takes place.

• The cations of sodium are reduced to sodium metal (molten form) at cathode.

$2Na^{+}(l) + 2e^{-}$→ $2Na(l)$

• While, anions of chlorine are oxidized to chlorine gas.

$2Cl^{-}(l)$→$Cl_{2}(g)+2e^{-}$

∴Overall equation:

$2Na^{+}(l)+2Cl^{-}(l)$ → $2Na(l) + Cl_{2}(g)$