Question

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During the electrolysis of brine solution.............. and ..............are obtained at cathode and anode respectively

Answer 1

During electrolysis of brine(aq. NaCl), NaCl and water are present as electrolyte. Na+ (from NaCl) and H+(from water) tends to move to negative terminal (i.e cathode) while Cl- (from NaCl) and OH-(from water) tends to move to positive terminal(i.e anode). ... So Cl2 gas is liberated at anode and H2 gas is at cathode.

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