G12 Electrochemistry

Electrochemistry

By Frank McCoy

Word Cloud

What do you remember about Electrochemistry?

Multiple Choice

What is the definition of a redox reaction?

• A reaction involving only acids and metals

• A reaction that releases carbon dioxide

• A reaction involving the transfer of electrons

• A reaction involving only combustion

Multiple Choice

What always forms during complete combustion of a carbon-based fuel?

• Water and carbon

• Carbon dioxide and water

• Carbon monoxide and water

• Hydrogen and soot

Multiple Choice

In redox reactions, oxidation is defined as:

• Gain of electrons

• Loss of electrons

• Formation of oxygen

• Dissociation of compounds

Multiple Choice

Which of the following is not a correct match?

• Anode – Oxidation

• Cathode – Reduction

• Reducing agent – Gains electrons

• Oxidising agent – Accepts electrons

Multiple Choice

What is the charge carrier in the electrolyte of an electrolytic cell?

• Electrons

• Neutrons

• Ions

• Protons

Multiple Choice

Which of the following compounds will dissociate in water to form Na⁺ and SO₄²⁻ ions?

• NaCl

• Na₂SO₄

• NaOH

• H₂SO₄

Multiple Choice

Which condition is necessary for a redox reaction to be classified as spontaneous?

• Use of inert electrodes

• Presence of combustion

• Strong reducing and oxidising agents

• High temperature

Multiple Choice

Which of the following reactions is not an example of a redox reaction?

• Na + Cl₂ → NaCl

• Cu²⁺ + 2e⁻ → Cu

• HCl + NaOH → NaCl + H₂O

• Fe → Fe²⁺ + 2e⁻

Multiple Choice

What happens at the anode during electrolysis using inert electrodes?

• Electrons are gained and reduction takes place

• Electrons are lost and oxidation takes place

• No reaction occurs

• The electrode gains mass

Multiple Choice

• X and Y only

• X and Z only

• Y and Z only

• X, Y and Z