Question

Which characteristic best identifies an Arrhenius base? It must donate electrons to form a covalent bond. It must accept protons from an acid. It must generate hydroxide ions in water. It must form a conjugate acid after reacting.

Answer 1

Option C= It must generate hydroxide ions in water

Explanation

An Arrhenius base is a substance that, when dissolved in an aqueous solution, increases the concentration of hydroxide, or OH-, ions in the solution. An aqueous solution is a solution that has water present in it.

Example

A base, sodium hydroxide, is added to an aqueous solution. It dissociates into sodium, Na+, and hydroxide, OH-, ions. Because the hydroxide ions are released in the aqueous solution, the hydroxide concentration increases; therefore, NaOH is an Arrhenius base.

Chemical equation

NaOH (s) → Na+ (aq) + OH– (aq)

Answer 2

The other choices are for bronsted Lowry acids, so the correct answer is C.