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Worksheets

Electrochemistry

Total questions: 34

Worksheet time: 19mins

Name
Class
Date
1.

Oxidation is the loss of electrons from some chemical species.

a)

True

b)

False

2.

The oxidation state of a species undergoing oxidation decreases

a)

True

b)

False

3.

The oxidation state of the species undergoing reduction is

a)

decreased

b)

increased

c)

no change

4.

The species that is oxidized is a reductant.

a)

True

b)

False

5.

The redox reaction in a galvanic cell is an example of spontaneous reaction.

a)

true

b)

false

6.

Kind of cell in the picture

a)

galvanic

b)

electrolytic

7.

Using iron as a cathode to prevent corrosion

a)

cathodic protection

b)

passivation

c)

galvanization

d)

coating

8.

The species oxidized in corrosion

a)

Fe

b)

O2

c)

Mg

9.

Species reduced in corrosion

a)

O2

b)

Fe

c)

Mg

10.

Salinity favors corrosion.

a)

True

b)

False

11.

Kind of cell in the picture

a)

electrochemical

b)

voltaic

c)

electrolytic

d)

galvanic

12.

Uses electrical energy to pump electrons.

a)

galvanic cell

b)

voltaic cell

c)

electrochemical cell

d)

electrolytic cell

13.

Electrolytic cell is based on a spontaneous reaction.

a)

true

b)

false

14.

Voltaic cell in which the reactants can be supplied continuously and the products of the cell reaction are continuously removed

a)

fuel cells

b)

alkaline battery

c)

secondary cells

d)

primary cells

15.

Alkaline battery is an example of

a)

primary cells

b)

secondary cells

c)

fuel cells

d)

electrolytic cells

16.

Lead acid storage battery is an example of

a)

primary cells

b)

secondary cells

c)

fuel cells

d)

electrolytic cells

17.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

What species is oxidized?

a)

Fe

b)

Cu2+

c)

Fe2+

d)

Cu

18.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

What species is reduced?

a)

Fe

b)

Cu2+

c)

Fe2+

d)

Cu

19.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

What is the oxidant?

a)

Fe

b)

Cu2+

c)

Fe2+

d)

Cu

20.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

What is the reductant?

a)

Fe

b)

Cu2+

c)

Fe2+

d)

Cu

21.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

How many electrons are gained?

a)

2

b)

0

c)

4

d)

6

22.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

How many electrons are lost?

a)

0

b)

2

c)

4

d)

6

23.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

Which half-reaction can be found in the anode?

a)

Fe + 2e- ----> Fe2+

b)

Fe ----> Fe2+ + 2e-

c)

Cu2+---->Cu + 2e-

d)

Cu2+ + 2e----> Cu

24.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

Which half-reaction can be found in the cathode?

a)

Fe + 2e----> Fe2+

b)

Fe----> Fe2+ + 2e-

c)

Cu2+ + 2e- -----> Cu

d)

Cu +2e ----> Cu2+

25.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

What is your cathode electrode?

a)

Fe

b)

Cu

26.

In the reaction: Fe + Cu2+ --->Fe2+ + Cu

What is your anode electrode?

a)

Fe

b)

Cu

27.

Assuming that the redox reaction in the galvanic cell:

Fe + Cu2+ --->Fe2+ + Cu

What is the movement of electrons?

a)

Fe to Cu

b)

Cu to Fe

28.

Species passing in the salt bridge

a)

cation

b)

anion

c)

cation and anion

d)

electrons

29.

A salt bridge can be found in the electrolytic cell.

a)

True

b)

False

30.

The charge of anode in the galvanic cell

a)

+

b)

-

c)

0

31.

The charge of cathode in a galvanic cell

a)

+

b)

-

c)

0

32.

Charge of cathode in eletrolytic cell

a)

+

b)

-

c)

0

33.

The cations in a galvanic cell moves toward the

a)

cathode

b)

anode

34.

The anions move towards the _______in a galvanic cell.

a)

anode

b)

cathode