why is saltwater a good conductor of electricity
Saltwater separates into a positively charged sodium ion and a negatively charged chloride ion. Ions are atoms that have either a positive or negative electric charge, depending on whether they gain or lose electrons. A metal like sodium forms positively charged ions. A chloride ion is a non-metal, and it forms a negatively charged ion. Although saltwater is a conductor of electricity, pure water is not. Making a saltwater circuit is an experiment that demonstrates saltwater s ability to conduct an electrical charge. To perform this experiment, one needs items that include a 9-volt battery, light bulb, insulated copper wires, beakers, salt and water.
Sodium chloride has the chemical formula NaCl. It also is an ionic compound. If a compound dissolves in an aqueous solution and can conduct electricity, it is called an electrolyte. Conversely, if a compound does not conduct electricity when it dissolves and becomes a solution, it is a nonelectrolyte. Compounds that consist of only non-metals are examples of nonelectrolytes.
How is water a good conductor of electricity? My ohmmeter indicates a lot of resistance in a bucket of water, yet I can get shocked a lot easier with the help of H2O. Water itself is not a conductor of electricity.
In order for a substance to carry charge, two conditions must first be met: O) the discrete molecules are free to move, however, they carry no charge. The only reason water can sometimes conduct electricity is because of the minerals (metallic solids) already present in the water. Answered by: Shaun Gladman, Student BHS Partially right but: mol/Liter positivly charged H+ and the same amount of negativly charged HO- (ph 7) leading to a conductivity of aprocimatly 0,055 omSiemens/cm (18,2 MOhm )for pure Water at 25 omC (compared with rainwater 35 - 100 omSiemens/cm dependent on Air Polution, River (Rhein Germany ) 300 - 745 omSiemens/cm,Sea 42 000omSiemens/cm Answered by: Ralf Biehl, Ph.
D Physics, University of Mainz, Institut fomr Physik The primary factor at play as to why it is easier to get shocked when water is involved is that water, being a liquid, spreads over the surface of and into the nooks and crannies of your skin much better than contact with a solid would, thus increasing the surface exposure of your skin to the electric shock.
Another phenomena that can happen once you try to expose water to a high electric potential is that it starts ionizing, i. e. you start creating ions in the water just from the strong electric field. Then you might end up with an ion trail being created, very much like the one created in the air during lightning, where the conductivity becomes very high. This trail becomes the passage for the current with almost no resistance. In any case avoid lightning, and electricity around wet things. Answered by: Anton Skorucak, PhysLink. com
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