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  4. What will happen to pH of brine solution if electrolysed?

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Q. What will happen to $pH$ of brine solution if electrolysed?

Electrochemistry

Solution:

$H _{2}$ is liberated at cathode and $Cl _{2}$ at anode during the electrolysis of $NaCl$ solution. $NaOH$ is formed so $pH$ will rise.