Question

Initial pH before base addition was 2.78 and the calculated concentration of the diluted acetic acid solution was 0.16 M

4. Using the initial pH of the acetic acid before addition of any base and the calculated concentration of the diluted acetic acid solution, determine the K, of acetic acid.

Answer 1

# Cholt - CH₂ ou +44 cea a 42 9.78 pH = -log 4+ 7 2.78 = -log [4] [ht] = 1.658 10- ca = 1.658103 0.1682 a 1.658 10-3 - d 21.65 X10-3 6.16 a = 1103 Xlo 2 2 ka = 1 Q x 4 C-ca do x 4 2 e Cord) - - Kaz CXL² = 0.16X (1+03x10-2) 2 Kaa 0.169 X 10-4 ka a 1.698105