Question

What happens in an acid-base reaction according to the Arrhenius definition?A. An acid donates an Ht, and a base donates electrons.B. An acid accepts an electron pair from a base.C. An acid donates an H+, and a base accepts an H⁻.D. An acid donates an H⁺, and a base donates an OH⁻.

Answer 1

D. An acid donates an H⁺, and a base donates an OH⁻.

Step-by-step explanation

When an Arrhenius acid reacts with an Arrhenius base, the products are usually water plus salt. This reaction is called a neutralization reaction.

In an aqueous solution, an Arrhenius acid raises the concentration of hydrogen (H⁺) ions, while an Arrhenius base raises the concentration of hydroxide (OH⁻).

Therefore, according to Arrhenius theory, acid is a substance that gives an H⁺ ion on dissolving in the aqueous solution while a base is a substance that ionizes OH⁻ ion by dissolving in the aqueous solution.

Hence, what happens in an acid-base reaction according to the Arrhenius definition is:

D. An acid donates an H⁺, and a base donates an OH⁻.