Representation method for primary batteries.12v deep cycle marine battery

　　1. Generally, the negative electrode (such as Zn rod and Zn2+ion solution) is written to the left of the battery symbol representation, while the positive electrode (such as Cu rod and Cu2+ion solution) is written to the right of the battery symbol representation.

　　2. Use chemical formulas to represent the composition of various substances in the battery. The solution should be labeled with activity or concentration (mol/L). If it is a gas substance, its partial pressure (Pa) should be indicated, and the temperature at that time should also be indicated. If not specified, the temperature is 298.15K, the gas partial pressure is 101.325kPa, and the solution concentration is 1mol/L.

　　3. Use the symbol "Å" to represent the boundary between different phases, and "Å" to represent the salt bridge. Different substances in the same phase are separated by ','.

　　4. Non metals or gases do not conduct electricity, so when using redox pairs composed of non-metallic elements at different oxidation values as half cells, inert conductors (such as

　　Platinum or graphite are used as electrode conductors. Among them, inert conductors do not participate in electrode reactions and only act as conductors (transporting or receiving electrons), hence they are called "inert" electrodes.

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