MCQ
Which of the following elements is extracted commercially by the electrolysis of an aqueous solution of its compound?
- ABr
- ✓Cl
- CNa
- DAl
✓
Answer
Correct option: B.
Cl
(B)Cl
Explanation:
Caustic soda is manufactured by electrolysis of NaCl solution where $Cl _2$ is evolved at the anode and $H _2$ at the cathode.
At anode: $Cl ^{-} \rightarrow Cl + e ^{-}, Cl + Cl \rightarrow Cl _2 \uparrow$
At cathode $: Na ^{+}+ e ^{-} \rightarrow Na$
Explanation:
Caustic soda is manufactured by electrolysis of NaCl solution where $Cl _2$ is evolved at the anode and $H _2$ at the cathode.
At anode: $Cl ^{-} \rightarrow Cl + e ^{-}, Cl + Cl \rightarrow Cl _2 \uparrow$
At cathode $: Na ^{+}+ e ^{-} \rightarrow Na$
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