s-Block ElementsHard

Question

What products are formed during the electrolysis of a concentrated aqueous solution of sodium chloride ?
I. Cl2 (g) , II . NaOH (aq). , III. H2(g).

Options

A.I only
B.I and II only
C.I and III only
D.All of these

Solution

NaCl →  Na+ + Cl-; 2 Cl- → Cl2↑ ­ + 2e-
HOH → H+ + OH-  ; 2H+ + 2e- → H2 ↑ ; Na+ + OH-  → NaOH.

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