Kedalam 200 mL larutan CH3COOH 0,1 M di tambah garam CH3COONa, sehingga diperoleh larutan penyangga dengan pH =6. Jika ka CH3COOH = 10 pangat min 5, garam CH3COONa yang ditambah sebanyak….
PH = 6
[H+] =
[H+] = Ka x
= x
n garam =
n garam = 2 x
n =
gr = 0,2 x 82
gr = 16,4 gram