Electrolysis - Aqueous solution (1)

Question 1

In electrolysis of solutions, which two ions are presented from the water molecules themselves?

Answer 1

OH-
H+

Question 2

In electrolysis of aqueous solution, what is the rule determining which ion will be oxidised (loss electrons) in the anode (+ve electrode)?

Answer 2

If a Halide is present - the Halide gets discharged
If a Halide is not presents - Always the Hydroxyde that gets discharged

Question 3

In electrolysis of aqueous solution, what is the rule determining which ion will be reduced (gain electrons) in the cathode (-ve electrode)?

Answer 3

The ion of the least reactive element will be discharged

Question 4

In the electrolysis of sodium chloride, NaCl(aq), which two ions would be present in the electrolyte?

Answer 4

Na+, Cl-, H+, OH-