Electrochemistry Basics

What is a galvanic cell?

• A galvanic cell is a type of fruit

• A galvanic cell is a type of computer chip

• A galvanic cell is a type of musical instrument

• A galvanic cell is an electrochemical cell that generates electrical energy from spontaneous redox reactions.

Explain the process of oxidation and reduction in an electrochemical cell.

• In an electrochemical cell, oxidation occurs at the anode where electrons are lost, and reduction occurs at the cathode where electrons are gained. The separated reactions are connected by an external circuit allowing the flow of electrons.

• Oxidation occurs at the cathode

• Electrons are gained at the anode

• Reduction occurs at the anode

What is the function of the salt bridge in a galvanic cell?

• Provides energy to the cell

• Prevents the flow of electrons

• Regulates the temperature of the cell

• Maintains electrical neutrality and completes the circuit by allowing the flow of ions.

Describe the components of an electrochemical cell.

• Metallic conductor, insulator, resistor

• Electrodes, electrolyte solution, salt bridge

• Positive terminal, negative terminal, switch

• Anode, cathode, wire

What is the difference between anode and cathode in a galvanic cell?

• Anode is positively charged, cathode is negatively charged.

• Anode is where electrons are gained, cathode is where electrons are lost.

• Anode is where oxidation occurs, cathode is where reduction occurs.

• Anode is where reduction occurs, cathode is where oxidation occurs.

How is the cell potential calculated in an electrochemical cell?

• Ecell = Eanode - Ecathode

• Ecell = Ecathode - Eanode

• Ecell = Ecathode * Eanode

• Ecell = Ecathode + Eanode

What is the standard hydrogen electrode (SHE) used for in electrochemistry?

• Measuring the pH of solutions

• Acting as a catalyst in chemical reactions

• Used for storing hydrogen gas

• Reference point for measuring electrode potential

Explain the concept of electrode potential.

• Electrode potential is the measure of the amount of water in an electrolyte

• Electrode potential is the measure of the color change in an electrolyte

• Electrode potential is the measure of the tendency of an electrode to lose or gain electrons when in contact with an electrolyte.

• Electrode potential is the measure of the temperature of an electrolyte

What is the Nernst equation and how is it used in electrochemistry?

• The Nernst equation is used to calculate the cell potential under non-standard conditions by taking into account the concentrations of reactants and products.

• The Nernst equation is used to determine the color of compounds in electrochemistry.

• The Nernst equation is used to calculate the speed of chemical reactions in electrochemistry.

• The Nernst equation is used to measure the temperature of solutions in electrochemistry.

Discuss the applications of electrochemical cells in real-life scenarios.

• Electrochemical cells are used in fashion design

• Electrochemical cells are used in cooking appliances

• Electrochemical cells are used in agriculture

• Electrochemical cells are used in batteries, electric vehicles, renewable energy storage, corrosion protection, electroplating, sensors, and medical devices.