CHEM102 Lecture Notes - Lecture 13: Lewis Acids And Bases, Hydrolysis, Covalent Bond

• School: University of Alberta
• Department: Chemistry
• Course: CHEM102
• Professor: Sai Yiu

Document Summary

+ (aq) + h2o (l) (cid:1) nh3 (aq) + h3o+ (aq) Assume x is very small when compared with 0. 25 (check if assumption is valid later) x2. 0. 123 x 100 = 6. 7 x 10-3 % therefore assumption is valid ph = - log 8. 3 x 10-6 = 5. 08. The lewis acid and base theory is not confined to reactions involving h+ and oh- A base is any species that donates an electron pair. An acid is any species that accepts an electron pair. B a (an adduct: a single species that contains a new covalent bond) Thus, lewis acid includes compounds that do not have hydrogen. Alcl3 is electron deficient and so accepts compounds with lone-pair to accomplish octet electrons. Chloromethane thus forms an adduct (product of lewis acid-base reaction which contains a new covalent bond with aluminium chloride. Metal cations acts as lewis acids by forming complex ions with water.