Chemistry
When dilute sodium chloride is electrolysed using graphite electrodes, the cation which is discharged at the cathode most readily :
Na+
OH-
H+
Cl-
Electrolysis
7 Likes
Answer
H+
Reason — Na+ and H+ (H3O+) migrate to cathode. But despite high concentration of Na+, H+ gains electron more easily than Na+, (sodium is above hydrogen in electro-chemical series). It is the H+ ions that accept electrons.
H+ + e- ⟶ H
Answered By
5 Likes
Related Questions
The metallic electrode which does not take part in an electrolytic reaction :
Cu
Ag
Pt
Ni
The ion which is discharged at the anode during the electrolysis of copper sulphate solution using platinum electrodes as anode and cathode is:
Cu2+
OH-
SO42-
H+
Cathode is a reducing electrode because :
it has less number of electrons
it has deficiency of electrons
cations gain electrons from cathode
anions lose electrons to cathode
Which statement about conduction of electricity is correct?
Electricity is conducted in an aqueous solution by electrons.
Electricity is conducted in a metal wire by ions.
Electricity is conducted in a molten electrolyte by electrons.
Electricity is conducted in an acidic solution by ions.