QUIZ 6.1(VI) Types of Electrodes

Which of the following ions are present in the copper(II) sulphate solution?

• hydrogen ions and hydroxide ions

• copper(II) ions and sulphate ions

• copper(II) ions, hydrogen ions, sulphate ions and hydroxide ions

Which of the following is not a factor that affect the products of electrolysis?

• Temperature of electrolyte

• types of electrodes

• concentration of ions in the electrolyte

• position of ions in electrochemical series

Based on diagram, state the factor affect the product of electrolysis?

• Concentration of ions in electrolyte

• Types of electrodes

• Position of Ions in Electrochemical Series

Based on diagram, state the product formed at anode.

• copper(II) ion is formed

• copper metal is formed

Based on diagram, state the product formed at cathode.

• copper(II) ion is formed

• copper metal is formed

Based on diagram, state the observation at anode.

• copper electrode becomes thinner or copper electrodes dissolves in electrolyte

• copper electrode becomes thicker or brown solid is deposited

Based on diagram, state the observation at cathode

• copper electrode becomes thinner or copper electrodes dissolves in electrolyte

• copper electrode becomes thicker or brown solid is deposited

Which electrolytic cell is affected by types of electrode?

• Electrolytic cell P

• Electrolytic cell Q

Based on diagram, state what happen at anode.

• copper(II) ions discharged to form copper atom.

• copper electrode ionises to form copper(II) ion

Based on diagram, state what happen at cathode

• copper(II) ion discharged to form copper metal atoms.

• copper electrode ionises to form copper(II) ion in the electrolyte