CHEM-UA 126 Chapter Notes -Conjugate Acid, Sodium Hydroxide, Stoichiometry
21 Oct 2014
School
Department
Course
Professor
Document Summary
Acid - a substance that yields hydrogen ions when dissolved in water. Base - a substance that yields hydroxide ions when dissolved in water. Note: not all arrhenius acids contain h, and not all arrhenius bases contain oh. The ion produced in aqueous solution by arrhenius acids is better represented as h3o+ (hydronium ion); h+ is shorthand, but is not appropriate for all situations. Limitation: restricted to reactions in aqueous solution. Acid-base reaction - an acid donates a proton and a base accepts that proton. New definition changed identity of the species acting as the base in many cases. Naoh is arrhenius base (donates oh-), but only the oh- is a bronsted-lowry base (can accept a proton; naoh cannot) Concept of conjugate acid-base pairs: acid releases proton and is now capable of accepting a proton (i. e. it"s a base); base accepts proton and is now capable of releasing a proton (i. e. it"s an acid)
