Practice!

Sample Problem

What is an acid? (Check all that apply)

(A) any solute that donates H+ to the solution

(B) any solute that accepts H+ from the solution

(C) any solute that donates OH- to the solution

(D) any solute that accepts OH- from the solution

Solution

(A) and (D) are correct. An acid increases the H+ concentration of a solution. Therefore, any solute that donates H+ to OR accepts OH- from the solution is considered an acid.