Quiz 5&6

Question 1

What is the primary principle behind electrometallurgy?

Answer 1

Electrochemical reactions driven by electricity

Question 2

Which of the following is NOT a common application of electrometallurgy?

Answer 2

Extraction of iron from iron
ore

Question 3

What is the main purpose of electrolysis in electrometallurgy?

Answer 3

To refine metals by
removing impurities

Question 4

What is the role of the anode in an electrolytic cell?

Answer 4

To release electrons and
oxidize the metal ions

Question 5

What is the role of the cathode in an electrolytic cell?

Answer 5

To receive electrons and
reduce the metal ions

Question 6

Which of the following components of electrolytic cell has a negative polarity?

Answer 6

Cathode

Question 7

It is the fluid medium carrying the metal ions in an electrolytic cell

Answer 7

Electrolyte

Question 8

In electrorefining metal containing copper and gold, which of the statements does not support why gold
are deposited as anode sludge?

Answer 8

Because copper has a
higher reduction potential

Question 9

If gold and silver has a 1.50 V and .80 V reduction potential, respectively, which between the two will
lose electrons first?

Answer 9

Ag (Silver)

Question 10

In electrorefining material containing 2 (two) metals, which of the following loses electrons first?

Answer 10

Metal with lower
reduction potential