consider the following statements: When a direct current is passed through an aqueous concentrated soluton of NaCl. 1. pH of the solution decreases. 2. metallic sodium will be deposited at the cathode. 3. Chlorie gas will be liberated at th anode. 4. pH of the solution increases. Which of the statements given above are correct?

consider the following statements: When a direct current is passed th

1.	consider the following statements: When a direct current is passed through an aqueous concentrated soluton of NaCl. 1. pH of the solution decreases. 2. metallic sodium will be deposited at the cathode. 3. Chlorie gas will be liberated at th anode. 4. pH of the solution increases. Which of the statements given above are correct?
Answer» 1 and 2 2 and 3 3 and 4 1 and 3 Solution :NaOH is formed in the solution hence, pH increases. Electrolysis of aqueous NaCl solution gives `H_(2)` at the cathode and not NA. `Cl_(2)` GAS is LIBERATED at the anode. Hence, (3) and (4) are correct.