Q.

What products are formed during the electolysis of concentrated aqueous solution of sodium chloride?(I) Cl2(g) at anode (II) NaOH as electrolyte (III) H2(g) at cathode

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a

I only

b

l and II only

c

I and III only

d

I, II and III

answer is D.

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Detailed Solution

Anode : 2Cl−(aq)⟶Cl2(g)+2e−  Cathode : 2H2O+2e−⟶H2(g)+2OH−(aq)  Net reaction  2Na+(aq)+2Cl−(aq)+2H2O(l)⟶Cl2(g)+H2(g)+2OH−(aq)+2Na+(aq)
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What products are formed during the electolysis of concentrated aqueous solution of sodium chloride?(I) Cl2(g) at anode (II) NaOH as electrolyte (III) H2(g) at cathode