Module 9: Electrochemistry

Question 1

Components of a reference electrode

Answer 1

Saturated calomel electrode

Silver/silver chloride electrode

Question 2

Saturated calomel electrode

Answer 2

Part of reference electrode
Mercury covered in thin coating of calomel (Hg2Cl2)
Immersed in concentrated KCl

Question 3

Silver/silver chloride electrode

Answer 3

Part of reference electrode
Silver covered in thin coating of silver chloride (AgCl)
Immersed in concentrated KCl

Question 4

Indicator electrode

Answer 4

Silver/silver chloride salt (Ag/AgCl) electrode immersed in dilute HCl