An acid is __________.

An important buffer system in the human body involves carbon dioxide (CO₂) and bicarbonate ion (HCO₃^-) in the reversible reaction

CO₂ + H₂O ⇌ H₂CO₃ ⇌ H⁺ + HCO₃^-

If a person becomes excited and exhales large amounts of CO₂, how will the pH of the person's body be affected?

Which of the following reactions is most consistent with that of a base?

The addition of an acid like HCl to an aqueous solution (pure water) would result in:

In what way(s) do bases work to increase the pH of a solution?