Question

According to the Arrhenius theory, 

(a) an acid is a proton donor 

(b) an acid is an electron pair acceptor 

(c) a hydrogen ion exists freely in an aqueous solution 

(d) a hydrogen ion is always hydrated to form a hydrogen ion

Answer 1

(c) a hydrogen ion exists freely in an aqueous solution.

According to the Arrhenius theory - An acid is a substance which releases \(H^+\) ions on dissolving in water. A base is a substance which releases \(OH^-\) ions on dissolving in water.

Answer 2

Option : (c) a hydrogen ion exists freely in an aqueous solution.