- #1
mattibo
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Why is the limiting conductivity of a weak electrolyte higher than the one for a strong electrolyte?
ex: KCl = 149 Scm2/mol HAc = 391 Scm2/mol
ex: KCl = 149 Scm2/mol HAc = 391 Scm2/mol
Strong electrolytes completely dissociate into ions when dissolved in water, while weak electrolytes only partially dissociate.
The stronger the electrolyte, the higher its conductivity, as more ions are available to carry an electric current.
A substance can be tested by conducting a simple conductivity test, where a conducting material is placed in a solution of the substance and a circuit is formed. If the solution conducts electricity well, it is a strong electrolyte, while a weak electrolyte will only conduct electricity to a limited degree.
Temperature, concentration, and the presence of other substances in the solution can all affect the strength of an electrolyte. For example, increasing the temperature can increase the dissociation of a weak electrolyte, making it behave more like a strong electrolyte.
Strong electrolytes include ionic compounds such as sodium chloride (table salt) and acids like hydrochloric acid. Weak electrolytes include weak acids like acetic acid and weak bases like ammonia.