what three substances are usually electrolytes?
You mean name three? There are literally hundreds.
Solutions of NaOH, HCl, NaCl, Na2CO3, Na2SO4 etc etc and all of these are STRONG electrolytes (not weak electrolytes).
Sodium chloride- (table salt)
Hydrocholoric acid- (used in household cleaning supplies)
Potassium nitrate- (used in fireworks)
(ﾉ◕ヮ◕)ﾉ*:・ﾟ✧
Three substances that are usually electrolytes are sodium (Na+), potassium (K+), and chloride (Cl-).
To determine which substances are electrolytes, we need to understand what an electrolyte is. An electrolyte is a substance that conducts electricity when dissolved in water or melted. It is composed of ions, which are atoms or molecules that have gained or lost one or more electrons. These ions can move freely in the solution, allowing the flow of electric current.
In the case of sodium, potassium, and chloride, they are all ions that readily dissociate in water and can conduct electricity. Sodium loses an electron to become a positively charged ion (Na+), potassium does the same (K+), and chloride gains an electron to become a negatively charged ion (Cl-). These ions can readily move in the solution, making them good conductors of electricity.
Therefore, sodium, potassium, and chloride are commonly found as electrolytes in the body as well as in various electrolyte solutions used in medical treatments.