Electrolysis

Question 1

Rules for electroylsis in aqueous solutions?

Answer 1

If the metal present is more reactive then hydrogen, hydrogen will be displaced
If at the anode if a halide is not present it will discharge the OH- ions
the OH ions will become oxygen and water

Question 2

What do acids and alkali’s produce in aqueous solutions?

Answer 2

Acids produce hydrogen ions, alkali’s produce hydroxide ions
OH-

Question 3

what is a strong acid and weak acid?

Answer 3

strong acid is completely ionised in water, weak acid will only partially ionise

Question 4

What is electroylsis?

Answer 4

The passing of an electric current through ionic substances that are molten or in solution to break them down into elements, they either become oxidised or reduce to create them

Question 5

What is an electrolyte

Answer 5

The liquid solution which conducts electricity

Question 6

what is a cathode and what is an anode?

Answer 6

Cathode = negative
anode = positiv

Question 7

what occurs at the cathode and what occurs at the anode?

Answer 7

Cathode is reduction
anode is oxidisation

Question 8

In aqueous solutions which element is discharged at the cathode oxygen is produced at the anode unless what?

Answer 8

Unless halide ions are present at the anode

Question 9

How is aluminium manufactured

Answer 9

Aluminium made through the electrolysis of aluminum oxide + cryolite