Understanding Half Equations in Electrolysis

What process always occurs at the cathode during electrolysis?

• Sublimation

• Oxidation

• Reduction

• Neutralization

Which of the following ions will turn into its metallic form at the cathode?

• Cl-

• Cu2+

• OH-

• O2-

How do you balance the atoms in a half equation?

• By adding electrons

• By adding protons

• By ensuring equal numbers of each type of atom on both sides

• By adding neutrons

What is the charge on the left side of the equation for Cu2+ before balancing?

• -2

• 0

• +2

• +1

What is the role of electrons in balancing charges in half equations?

• They neutralize the charge

• They decrease the charge

• They increase the charge

• They have no effect on charge

What type of gases are typically produced at the anode?

• Noble gases

• Diatomic gases

• Inert gases

• Monatomic gases

Which process occurs at the anode during electrolysis?

• Reduction

• Oxidation

• Condensation

• Evaporation

What is the elemental form of chlorine produced at the anode?

• Cl4

• Cl2

• Cl3

• Cl

How do you balance the charges in a half equation involving anions?

• By removing electrons

• By adding electrons to the left side

• By adding protons

• By adding electrons to the right side

What is the charge on the right side of the equation for Cl- before balancing?

• +1

• 0

• -1

• -2