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Of the three solutions listed in the table above, which one, if any, has the greatest electrical conductivity and why?
Of the three solutions listed in the table above, which one, if any, has the greatest electrical conductivity and why?

Of the three solutions listed in the table above, which one, if any, has the greatest electrical conductivity and why?

(A) 0.1 M HC2H3O2(aq) because its molecules have the most atoms.

(B) 0.1M KI(aq) because KI completely dissociates in water to produce ions.

(C) 0.1 M CH3OH(aq) because its molecules can form hydrogen bonds.

(D) All three solutions have the same electrical conductivity because the concentrations are the same.

SOLUTION:
Strong acids and bases as well as aqueous ionic compounds are good conductors of electricity because they dissociate into ions completely and the ions allow for the electrical conductivity.
HC2H3O2(aq) is a weak acid (acetic acid) and would be a weak electrolyte. KI is an ionic compound because it is composed of a metal and a nonmetal and would be a strong electrolyte. CH3OH(aq) is a molecular compound and does not conduct electricity. Choice B is the correct answer choice.


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