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Electrochemistry Quiz 2

Total questions: 40

Worksheet time: 26mins

Name
Class
Date
1.

What would be the product at the negative electrode in the electrolysis of Sodium Chloride solution

a)

Sodium

b)

Chlorine

c)

Hydrogen

d)

Oxygen

2.

What would be the product at the positive electrode in the electrolysis of Sodium Chloride solution

a)

Sodium

b)

Chlorine

c)

Hydrogen

d)

Oxygen

3.

What would be the product at the negative electrode in the electrolysis of molten Sodium Chloride

a)

Sodium

b)

Chlorine

c)

Hydrogen

d)

Oxygen

4.

What would be the product at the positive electrode in the electrolysis of molten Sodium Chloride

a)

Sodium

b)

Chlorine

c)

Hydrogen

d)

Oxygen

5.

What would be the product at the negative electrode in the electrolysis of Silver Nitrate solution

a)

Silver

b)

Nitrogen

c)

Hydrogen

d)

Oxygen

6.

What would be the product at the positive electrode in the electrolysis of Silver Nitrate solution

a)

Silver

b)

Nitrogen

c)

Hydrogen

d)

Oxygen

7.

What is the name given to the negative electrode

(a)  

8.

What name is given to the positive electrode

(a)  

9.

What is the third product produced in the electrolysis of Silver Nitrate solution

a)

Silver Nitrate

b)

Water

c)

Nitric Acid

d)

Silver Hydroxide

10.

What is the product at the negative electrode in the electrolysis of Copper Iodide solution

a)

Copper

b)

Iodine

c)

Hydrogen

d)

Oxygen

11.

What is the product at the positive electrode in the electrolysis of Copper Iodide solution

a)

Copper

b)

Iodine

c)

Hydrogen

d)

Oxygen

12.

What is the third product produced in the electrolysis of Copper Iodide solution

a)

Copper Iodide

b)

Copper Hydroxide

c)

Water

d)

Hydrogen Iodide

13.

What particles carry the electrical charge through the electrodes

a)

Electrons

b)

Ions

c)

Atoms

d)

Molecules

14.

What particles carry the electrical charge through the electrolyte

a)

Electrons

b)

Ions

c)

Atoms

d)

Molecules

15.

What would you observe at the negative electrode in the electrolysis of Sodium Chloride solution

a)

Bubbles of gas that burn with a squeaky pop

b)

Bubbles of gas that relight a glowing splint

c)

Bubbles of gas that bleach damp litmus paper

d)

Solid deposits in the electrode

16.

What would you observe at the positive electrode in the electrolysis of Sodium Chloride solution

a)

Bubbles of gas that burn with a squeaky pop

b)

Bubbles of gas that relight a glowing splint

c)

Bubbles of gas that bleach damp litmus paper

d)

Solid deposits in the electrode

17.

What would you observe at the positive electrode in the electrolysis of Copper Sulphate solution

a)

Bubbles of gas that burn with a squeaky pop

b)

Bubbles of gas that relight a glowing splint

c)

Bubbles of gas that bleach damp litmus paper

d)

Solid deposits in the electrode

18.

What would you observe at the negative electrode in the electrolysis of Copper Sulphate solution

a)

Bubbles of gas that burn with a squeaky pop

b)

Bubbles of gas that relight a glowing splint

c)

Bubbles of gas that bleach damp litmus paper

d)

Solid deposits in the electrode

19.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
20.
Which statement correctly describes the 2 electrodes?
a)
The anode is negative and the cathode is positive
b)
The anode and cathode are both positive
c)
The anode is positive and the cathode is negative
d)
The anode and cathode are both negative.
21.
Positive ions (cations) will move towards the cathode (-) where they will discharge by....
a)
Breaking apart
b)
Losing electrons
c)
Clumping together.
d)
Gaining electrons
22.

What is the product formed at the cathode during the electrolysis of molten magnesium fluoride (hint: consider the oxidation states of the products)?

a)
magnesium
b)
hydrogen
c)
fluorine
d)
oxygen
23.
Describe oxidation in terms of electrons
a)
oxidation is gain of electrons
b)
oxidation is loss of electrons
24.
Describe reduction in terms of electrons
a)
reduction is gain of electrons
b)
reduction is loss of electrons
25.
The electrode connected to the positive terminal of a battery is __________.
a)
cathode
b)
anode
26.
The negatively charged ions migrate toward the ________.
a)
anode
b)
cathode
27.
What are produced at positive/negative electrodes during electrolysis of molten NaCI?
a)
A
b)
B
c)
C
d)
D
28.

Anions get discharged by ________ electrons at the ___________

a)

gaining, cathode

b)

losing, anode

c)

gaining, anode

d)

losing, cathode

29.
What is the name given to the solution that is being electrolysed?
a)
Salt solution
b)
Electric solution
c)
Mineral solution
d)
Electrolyte
30.
Explain why the electrolyte has to be a liquid.
a)
So the ions can move
b)
So the electrons can move
c)
So that it doesn't get too hot
d)
So the fish are ok
31.
What happens at the positive electrode?
a)
Positive non-metal ions are attracted
b)
Positive metal ions are attracted
c)
Negative non-metal ions are attracted
d)
Negative metal ions are attracted
32.

___________ electrode is an inert electrode.

a)

Copper

b)

Iron

c)

Carbon

d)

Zinc

33.
What particle carries the charge in the wire?
a)
electron
b)
proton
c)
ion
d)
atom
34.

What are the products at the electrodes when dilute sulfuric acid is electrolysed using inert electrodes?

a)

A

b)

B

c)

C

d)

D

35.

Which row describes the electrolysis of molten potassium bromide?

a)

A

b)

B

c)

C

d)

D

36.

The diagram shows the electrolysis of concentrated hydrochloric acid and concentrated aqueous

sodium chloride using carbon electrodes.

At which electrode(s) is hydrogen produced?

a)

electrode 1 only

b)

electrodes 1 and 3

c)

electrode 2 only

d)

electrodes 2 and 4

37.
What state must the ionic compound be in to be electrolysed?
a)
aqueous only
b)
solid only
c)
solid or aqueous only
d)
molten or aqueous only
38.

Electrolysis is the passage of ______________ through a liquid or a solution accompanied by a ___________  change.

a)

Chemical, electricity

b)

Electricity, chemical

c)

Electrons, chemical

d)

Electricity, physical

39.

Ionisation is a ______________ process.

a)

Irreversible

b)

Reversible

c)

Both (a) and (b)

d)

None of these

40.

Water is _______________

a)

Strong electrolyte

b)

Non-electrolyte

c)

Weak electrolyte

d)

None of these

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