Question

Dik: M CH3COOH=0,15 M
V CH3COOH= 100ml
M NaOH= 0,1M
V NaOH= 150ml
ka CH3COOH = 10^-5
dit: Ph campuran..?

Answer 1

Cari mol nya dulu
n = M.V
  = 100. 0,15
  =
n = M.V
  =150.0,1

Answer 2

Mol CH3COOH 0.15 x 100 = 15 mmol
mol NAOH 0.1 x 150 = 15 mmol
[H+] = Ka x a/g
= 10^-5 x 15/15
= 10^-5
pH = -log 10^-5
= 5