Ajack794152 Eletrolysis quiz

What is the missing number in this half equation?

2O^2- -> O₂ + ___ e^-

In reduction, electrons are

Does this half equation show oxidation or reduction?

Cu²⁺ + 2e^- -> Cu

• Oxidation

• Reduction

What happens at the positive electrode?

• Positive non-metal ions are attracted
• Positive metal ions are attracted
• Negative non-metal ions are attracted
• Negative metal ions are attracted

In the electrolysis of a solution of calcium chloride, what is produced at the two electrodes?

• Calcium and chlorine

• Calcium and oxygen

• Hydrogen and chlorine

• Hydrogen and oxygen

Positive ions are attracted to which electrode?

• Positive

• Negative

The positively charged ions migrate toward the ________.

• anode
• cathode

Explain why the electrolyte has to be a liquid.

• So the ions can move
• So the electrons can move
• So that it doesn't get too hot
• So the fish are ok

Does this half equation show oxidation or reduction?

4OH^- -> O₂ + 2H₂O + 4e^-

• Oxidation

• Reduction

What is the name of the positive electrode?

• cathode
• anode