A galvanic cell is constructed from a Zn/Zn2+ half-cell (anode) and a Cl2/Cl- half-cell (cathode). (c) Give the shorthand notation for the cell.

Name: Chemistry
Author: McMurry
ISBN: 9781292336145

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Identify the anode and cathode reactions. The anode reaction involves the oxidation of Zn to Zn^{2+}, and the cathode reaction involves the reduction of Cl_2 to Cl^-.

Write the half-reactions for the anode and cathode. The anode half-reaction is Zn \(\rightarrow\) Zn^{2+} + 2e^-, and the cathode half-reaction is Cl_2 + 2e^- \(\rightarrow\) 2Cl^-.

Determine the direction of electron flow. Electrons flow from the anode to the cathode in a galvanic cell.

Write the cell notation. The anode is written on the left and the cathode on the right, separated by a double vertical line representing the salt bridge.

Combine the components into the shorthand notation: Zn | Zn^{2+} || Cl_2 | Cl^-.

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Galvanic 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. It consists of two half-cells, each containing an electrode and an electrolyte, where oxidation occurs at the anode and reduction occurs at the cathode. The flow of electrons from the anode to the cathode generates an electric current.

Half-Cell Notation

Half-cell notation is a standardized way to represent the components of an electrochemical cell. It typically includes the anode and cathode separated by a double vertical line, which indicates the salt bridge or porous barrier. Each half-cell notation includes the metal or gas involved, its ion form, and their respective concentrations, allowing for a clear understanding of the cell's components and reactions.

Standard Electrode Potential

Standard electrode potential is a measure of the tendency of a chemical species to be reduced, measured under standard conditions (1 M concentration, 1 atm pressure, and 25°C). It is expressed in volts and is crucial for determining the overall cell potential of a galvanic cell. The difference in standard electrode potentials between the anode and cathode indicates the direction of electron flow and the cell's voltage output.