Electrolysis quiz (Singapore N(A)-Level Science Chemistry, SEAB 5107) quiz
15questions. Pick an answer and you'll see why right away.
Why must an ionic compound be molten or dissolved before it can be electrolysed?
Which electrode is the cathode?
To which electrode do positive ions move during electrolysis?
What is formed at the cathode when molten lead(II) bromide is electrolysed?
What process occurs at the anode in any electrolysis?
When molten sodium chloride is electrolysed, what forms at the anode?
Why is hydrogen often produced at the cathode when a solution of a reactive metal salt is electrolysed?
What is usually produced at the anode when dilute copper(II) sulfate solution is electrolysed with inert electrodes?
What is produced at the anode when concentrated sodium chloride solution is electrolysed?
Which reactive metal is extracted from its molten ore by electrolysis?
In electroplating an object with silver, what is the object made?
During electroplating, what happens at the anode made of the plating metal?
What type of reaction is the gain of electrons at the cathode?
Why is electrolysis described as the reverse of a spontaneous reaction?
One use of electrolysis in industry is to purify which metal?