NEW
Font size
WorksheetsG10 IGCSE Electrolysis Quiz
Total questions: 15
Worksheet time: 8mins
When substance X is electrolysed, the amount of gases P and Q formed is shown.
What is substance X?
concentrated aqueous sodium chloride
concentrated hydrochloric acid
dilute sulfuric acid
molten lead(II) bromide
What are the products at the electrodes when dilute sulfuric acid is electrolysed using inert electrodes?
A
B
C
D
Electricity is passed separately through concentrated hydrochloric acid, concentrated aqueous
sodium chloride and dilute sulfuric acid.
In which rows are the electrolysis products correctly named?
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
Which row describes the electrolysis of molten potassium bromide?
A
B
C
D
The diagram shows the electrolysis of concentrated hydrochloric acid and concentrated aqueous
sodium chloride using carbon electrodes.
At which electrode(s) is hydrogen produced?
electrode 1 only
electrodes 1 and 3
electrode 2 only
electrodes 2 and 4
What are the electrode products when molten silver iodide is electrolysed between inert electrodes?
A
B
C
D
Copper and hydrogen can each be formed by electrolysis.
At which electrodes are these elements formed?
A
B
C
D
The diagram shows a failed attempt to copper-plate a pan.
Which action will plate the pan with copper?
cooling the copper sulfate solution in an ice bath
heating the copper sulfate solution to boiling point
increasing the voltage from 3V to 6V
making the pan the cathode and the copper the anode
The diagram shows the electroplating of a steel object.
A student made the following statements.
1 The object turns a reddish-brown colour.
2 The copper sulfate solution changes to a paler blue colour.
3 The copper electrode becomes smaller.
Which statements are correct?
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
An object is electroplated with silver using an aqueous silver salt as the electrolyte.
Which set of conditions is used?ZA
A
B
C
D
The diagram shows an electrolysis experiment.
During the electrolysis, sodium was formed at electrode P and chlorine at electrode Q.
Which choice correctly identifies P, Q and X?
P = anode; Q = cathode; X = concentrated solution of sodium chloride in water
P = anode; Q = cathode; X = molten sodium chloride
P = cathode; Q = anode; X = concentrated solution of sodium chloride in water
P = cathode; Q = anode; X = molten sodium chloride
The diagram shows apparatus for plating a spoon with silver.
Which statement is not correct?
Silver would stick to the spoon because it is a very reactive metal.
The electrolyte would be a silver salt dissolved in water.
The metal electrode would be made from silver..
The spoon would be connected to the negative terminal of the power supply.
Which metal could not be used for electroplating by using an aqueous solution?
chromium
copper
silver
sodium
Which products are formed at the electrodes when a concentrated solution of sodium chloride is electrolysed?
A
B
C
D
A student wishes to electroplate an object with copper.
Which row is correct?
A
B
C
D
