In the electrolysis of a concentrated solution of sodium ...
In the electrolysis of a concentrated solution of sodium chloride using electrodes, which of the following ions are discharged at the cathode and anode respectively?
Na+ and Cl-
Na+ and OH-
H+ and OH-
H+ and Cl-
Correct answer is D
In the electrolysis of conc. NaCl,
anions = Cl−andOH−
cations = H+andNa+
So, hydrogen ion will migrate to the cathode, and Cl ion will migrate to the anode at the expense of hydroxide ion because of higher concentration in the solution
Duralumin consists of aluminium, copper, ? ...
Which of the following is a set of neutral oxides? ...
A substance which dissolves readily in organic solvent would ...
Which of the following pairs of reagents reat to produce hydrogen? ...
The iron ore magnetite consists of ...
Safety matches contain sulphur and the following except? ...
Which of the following statements about nuclear reaction is correct? The reaction ...