CHEM 001C Lecture Notes - Lecture 6: Hypobromous Acid, Acid Dissociation Constant, Ammonia

• School: UC Riverside
• Department: Chemistry
• Course: CHEM 001C
• Professor: Eichler

Document Summary

Chem 001c lecture 6: chapter 14 acid-base chemistry. Acids with pka significantly less than 1. Example: hso 3 f * sbf 5 pka = -31. K a / k b = equilibrium dissociation constants for acids and bases. B + h 2 o hb + + oh - Temperature is the only factor that can influence k value, Where k w = 1. 0 x 10 -14 at 25 according to equation: [h 3 o + ] = 10 -ph ph = -log[h 3 o + ] [oh - ] = 10 -poh poh = -log[oh - ] Example : calculate the k a of a 0. 2m aqueous solution of ch 3 ch 2 co 2 h with a ph of 4. 88. [h 3 o + ] = 10 -4. 88 = 1. 32 x 10 -5 m = x. K a = (0. 2 1. 32 x 10 ) 5 (1. 32 x 10 ) 5 2.