Which solution is the best conductor of an electric current

Incomplete question, the complete question is written below

An aqueous solution of which of the following compounds is the best conductor of electric current?

A. Ammonia NH3.

B. Fructose C6H12O6.

C. Acetic acid C2H4O2.

D. Hydrochloric acid HCl.

Answer

D. Hydrochloric acid HCl

The aqueous solution of Hydrochloric acid, HCl is the best conductor of electric current as it is a strong electrolyte and is completely dissociated into ions.

Dissolution of HCl

HCl → H+ + Cl-

The positive ion Hydrogen moves to the cathode, so they are called cations

The negative ions Chlorine moves to the anode, and they are called anions.

Conductivity can be increased by increasing the concentration of charge carriers (ions) in an aqueous solution. An aqueous hydrochloric acid solution will conduct electricity very well. However each of the ions has only a single charge--hydrogen is +1 and chloride is -1.

An aqueous solution that can be completely dissociated into ions provides best conductivity.

Explanation:

Electric current is the rate of flow of charge. An aqueous solution that can be completely dissociated into ions provides best conductivity.

Example:

Aqueous solution of hydrochloric acid provides best conductivity since it ionizes completely.

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explanation: