Understanding Ion and Electron Flow in Galvanic and Electrolytic Cells

In summary, a galvanic cell converts chemical energy into electrical energy through spontaneous redox reactions, while an electrolytic cell uses electrical energy to drive non-spontaneous redox reactions. In a galvanic cell, electrons flow from the anode to the cathode through the external circuit, while ions flow through the electrolyte solution to balance out the charge. A salt bridge is used to maintain electrical neutrality in a galvanic cell. The direction of electron flow is determined by the relative positions of the anode and cathode on the standard electrode potential scale. The rate of electron flow in a galvanic cell is influenced by factors such as reactant and product concentration, temperature, electrode properties, and the presence of catalysts
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ajayguhan
153
1
I know that positively charged cation move toward cathode which is the negative terminal and the negatively charged anion move towards anode which is positive terminal

Why does in galvanic cell cations are moving toward cathode which is positively terminal?

And why in galvanic cell cathode is positive and in electrolytic cell cathode is negative?

How could this happen?
 
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1. What is the difference between a galvanic cell and an electrolytic cell?

A galvanic cell, also known as a voltaic cell, is an electrochemical cell that converts chemical energy into electrical energy through spontaneous redox reactions. An electrolytic cell, on the other hand, uses electrical energy to drive non-spontaneous redox reactions.

2. How do ions and electrons flow in a galvanic cell?

In a galvanic cell, the anode (negative electrode) is where oxidation occurs, releasing electrons into the external circuit. These electrons then flow through the external circuit to the cathode (positive electrode), where reduction occurs. At the same time, ions flow through the electrolyte solution to balance out the charge.

3. What is the purpose of a salt bridge in a galvanic cell?

A salt bridge is used to maintain electrical neutrality in a galvanic cell. It allows ions to flow between the anode and cathode compartments, completing the circuit and preventing the buildup of charge.

4. How is the direction of electron flow determined in a galvanic cell?

The direction of electron flow in a galvanic cell is determined by the relative positions of the anode and cathode on the standard electrode potential (E°) scale. The electrode with the more positive E° value will undergo reduction, while the electrode with the more negative E° value will undergo oxidation.

5. What factors affect the rate of electron flow in a galvanic cell?

The rate of electron flow in a galvanic cell is affected by several factors, including the concentration of reactants and products, temperature, surface area and nature of the electrodes, and the presence of catalysts. These factors can impact the kinetics of the redox reactions and ultimately affect the rate of electron transfer.

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