Question

question 3
the hydroxide ion is responsible for the properties of
acids.
bases.
salts.
question 4
in an acidic solution the
concentration of hydronium ion is greater than that of hydroxide ion.
concentration of hydroxide ion greater than that of hydronium ion.
concentration of hydronium ion and hydroxide ion are equal.

Explanation:

• For Question 3: According to Arrhenius theory, bases are substances that dissociate in water to produce hydroxide ions (\(OH^-\)). Acids produce hydronium ions (\(H_3O^+\)) and salts are formed by the reaction of an acid and a base.
• For Question 4: In an acidic solution, by definition, the concentration of hydronium ions (\([H_3O^+]\)) is greater than the concentration of hydroxide ions (\([OH^-]\)). When \([H_3O^+]=[OH^-]\), the solution is neutral, and when \([OH^-]>[H_3O^+]\), the solution is basic.

Answer:

• Question 3: B. bases
• Question 4: A. concentration of hydronium ion is greater than that of hydroxide ion