Q.

After the electrolysis of aqueous solution of NaCl using Pt electrodes, the pH of the solution

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a

increases

b

decreases

c

remains constant

d

becomes zero

answer is A.

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Detailed Solution

At CathodeH2O under goes reduction.At AnodeCl- undergoes oxidation.In the vessel Na+  and  OH- reacts with each other and forms NaOH,which is a strong base. PH increases.
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After the electrolysis of aqueous solution of NaCl using Pt electrodes, the pH of the solution