Question

Explain why Potassium Chloride is an electrovalent compound while Hydrogen Chloride is a covalent compound but both conduct electricity in their aqueous solutions.

Answer 1

In potassium chloride potassium acts cations and chloride acts as anion. Because of the complete transfer of electrons from potassium ion to chloride ion...so it is an ionic or electrovalent compound...... But in case of HCl there is the presence of covalent bond that is there is the presence of sharing of electrons b/w hydrogen and chlorine...
In aqueous medium ionic compounds dissociate into ionic compounds conduct electricity whereas HCl in aqueos medium dissociates into hydronium and chloride ion due to strong attraction by lone pair of electron of oxygen atom of water.

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