How Does Salt Aid In Conducting Electricity Through Water?

3 Answers

amber Jhon Profile
amber Jhon answered
A salt is formed by the neutralization of a base and an acid. A positive charged ion and a negative charged ion are combined to form a salt. When a salt is added to water, it decomposes into its cation and anion. Electricity passes through a substance due to the flow of free ions or free charge carrier. Salt water solution has free ions therefore, salt dissolved in water can conduct electricity. For example when sodium chloride is dissolved in water, it can conduct electricity.
Syed Asim Profile
Syed Asim answered
Salt is the general name of the chemical compound called sodium chloride, sodium compound is an ionic compound being produced by the chemical bonding of sodium ion and chloride ion. Sodium has eleven electrons and has one extra electron in its outer most shell and chlorine runs short of one electron. As sodium losses one electron chlorine gains it and a chemical bond is produced.

So due to its ionic nature it is a polar compound. Water on the other hand is a compound produced by covalent bonding of hydrogen and oxygen. However water is non polar in nature. It has oxygen and hydrogen which is different in electronegativities due to difference in electronegativities temporary dipoles or partial charges are produced which will cause an attraction between hydrogen and oxygen causing hydrogen bonding. This hydrogen bonding does not allow electricity to flow through it.

In order to electrolyze water a lot of electric potential is required. If any polar compound like sodium chloride is added into water it will easily disperse and allow free flow of charged particles which will support the flow of current through the circuit. Thus addition of salt actually adds some polar groups in the non polar water which will easily flow through the solution and will help increasing the flow of current through water.
arjan lingaya Profile
arjan lingaya answered
Yes,when salt is dissolves in water it can conduct electricity because when salt is dissolves in water it will disintegrate as a result they carry now different charges the sodium now carry the positive charge and the chlorine carry the negative charge that when you put electrodes they will attract to their respective electrodes.

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