Electrolysis

Which statement correctly describes the 2 electrodes?

• The anode is negative and the cathode is positive
• The anode and cathode are both positive
• The anode is positive and the cathode is negative
• The anode and cathode are both negative.

___________ electrode is an inert electrode.

• Copper

• Iron

• Carbon

• Zinc

Ionic compounds do not conduct electricity when they are solid because,

• their ions are free to move

• their ions are not free to move

• their electrons must undergo a state change

• their electrons are frozen

Positive ions will move towards the cathode where they will discharge by ____

• Breaking apart
• Losing electrons
• Clumping together.
• Gaining electrons

Which equation shows what happen to chloride ions at the anode.

• Cl^- --> Cl + e-

• 2Cl^- --> Cl₂ + 2e-

• Cl₂ - -> 2e- + 2Cl^-

• Cl₂ + 2e- _--> 2Cl^-

In an aqueous solution of copper chloride, which ions are attracted to the cathode?

• Cu²⁺ and Cl^- and H⁺ and OH^-
• Cu²⁺ and H⁺ 
•  Cl^- and OH^-
• Cu²⁺ 

In electrolysis of concentrated HCl, what is the product formed at anode?

• Hydrogen

• Oxygen

• Chlorine

• Hydroxide ion

Oxidation is loss of electron. Where does oxidation take place during electrolysis.

• At anode

• In the electrolyte

• At the circuit

• At cathode

In electrolytic cell that uses aqueous copper(II) sulfate as electrolyte and copper plates as electrodes, what is the product at the anode?

• Oxygen gas and water

• Copper metal

• Copper(II) ions

• Hydrogen gas

Anions get discharged by ________ electrons at the ___________

• gaining, cathode

• losing, anode

• gaining, anode

• losing, cathode