Electrochemical cells and electrolysis

Question 1 of 10

Solid sodium chloride conducts electricity.

Question 2 of 10

Fuel cells convert the energy of a fuel directly into electricity.

Question 3 of 10

The positive electrode in electrolysis is the ___.

Question 4 of 10

During electrolysis, oxidation takes place at the

Question 5 of 10

The lead–acid accumulator is a

Question 6 of 10

Electroplating an iron spoon with silver requires the spoon to be the

Question 7 of 10

The reference electrode with E° = 0.00 V is the standard ___ electrode.

Question 8 of 10

In electrolysis, anions move to the anode.

Question 9 of 10

Describe how copper is purified by electrolysis. Include the electrodes, the electrolyte, the half-equations and what happens to the impurities.

Question 10 of 10

Draw and label a Daniell cell. Write the half-equations at each electrode and the overall equation. Calculate the cell e.m.f. given E°(Zn²⁺/Zn) = −0.76 V and E°(Cu²⁺/Cu) = +0.34 V.