CHEM 023 Lecture Notes - Lecture 31: Hydronium, Conjugate Acid, Weak Base

• School: University of Vermont
• Department: Chemistry
• Course: CHEM 023
• Professor: Flemer

Document Summary

We will only be considering solutions of aids and bases in a water solvent system. When an acid is dissolved in water, an h2o molecule acts as a base to accept the hydrogen ion from the acid to form a hydronium ion. H h h h (acid) (base) (conjugate acid) (conjugate base) When a base is dissolved in water, an h2o molecule acts as an acid to donate a hydrogen ion to the base to form a hydroxide ion. H h h (base) (acid) (conjugate acid) (conjugate base) Strong acids dissociate completely when dissolved in water to form a hydronium ion. Weak acid hardly dissociate at all to form hydronium ions when dissolved in water. H h h h h h (weak acid) (< 1 m soln) Strong bases dissolve completely in water to form hydroxide ions. Na+ + oh- (hydroxide ion 1 m soln) Weak bases hardly form any hydroxide ion at all when dissolved in water.