AP Chemistry: Electrochemistry 2

Question 1

In a galvanic cell, oxidation always occurs at which electrode?

Accepted Answer

The anode

Answer

The cathode

Answer

The salt bridge

Answer

The cathode in basic solution only

Question 2

What is the standard cell potential of a cell with E°(cathode) = +0.80 V and E°(anode) = +0.34 V?

Accepted Answer

+0.46 V

Answer

+1.14 V

Answer

-0.46 V

Answer

+0.23 V

Question 3

A positive standard cell potential indicates the reaction is:

Accepted Answer

Spontaneous

Answer

Nonspontaneous

Answer

At equilibrium

Answer

Endothermic

Question 4

In a salt bridge containing KNO₃, which ions migrate toward the anode compartment?

Accepted Answer

Anions (NO₃⁻)

Answer

Cations (K⁺)

Answer

Electrons

Answer

Neither ion moves

Question 5

Which equation relates standard cell potential to the equilibrium constant?

Accepted Answer

ΔG° = −RT ln K = −nFE°

Answer

E° = K/nF

Answer

E° = RT ln(nF)

Answer

K = nFE°/RT

Question 6

How many electrons are transferred in the balanced reaction Cu²⁺ + 2e⁻ → Cu?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 7

In the cell notation Zn | Zn²⁺ || Cu²⁺ | Cu, what does the double vertical line represent?

Accepted Answer

The salt bridge

Answer

The anode

Answer

The voltmeter

Answer

A phase boundary at the electrode