CHEM 120 Chapter Notes - Chapter 16: Hellerup Ik, Boron Trifluoride, Benzene

• School: McGill University
• Department: Chemistry
• Course: CHEM 120
• Professor: Laura Pavelka

Document Summary

Release of h+ or oh: arrhenius acid-base definition: classified acids and bases in terms of formulae and behaviour in water, acid: substance with h in formula & dissociates in water to yield h+ (which may form. All arrhenius acids are also b-l acids: base: proton acceptor, any species that accepts h+ ion. Must contain lone pair of electrons to bind h+. Hcl + h2o cl- + h3o: base accepts proton from water: ammonia dissolved in water, an h+ from h2o transferred to lone pair of n, forming nh4. + + oh: water is amphiprotic: acts as base in one reaction and as acid in other. In b-l terminology, h2s and hs- are conjugate acid-base pair: hs- is conjugate base of acid. Variation in acid strength: acid-dissociation constant: acids classified by strength, amount of h3o+ or oh- produced by mole of substance dissolved.