The product, which is not obtained during the electrolysis of brine solution is
(1) HCl
(2) NaOH
(3) Cl2
(4) H2


Answer: Option 1
Explanation:

During the electrolysis of brine solution (NaCl + H2O), an electric current is passed through the solution, which causes the NaCl to dissociate into Na+ and Cl- ions.

At the cathode, hydrogen ions (H+) are reduced to hydrogen gas (H2) by gaining electrons. The half-reaction at the cathode is:
2H+ + 2e → H2

At the anode, chloride ions (Cl) are oxidized to chlorine gas (Cl2) by losing electrons. The half-reaction at the anode is:
2Cl → Cl2 + 2e

Sodium ions (Na+) and hydroxide ions (OH) are also produced during the electrolysis, and they combine to form sodium hydroxide (NaOH) according to the following reaction:
Na+ + OH → NaOH

Therefore, all of the products listed in options (2), (3), and (4) are obtained during the electrolysis of brine solution. The only product that is not obtained is option (1) HCl.

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