Page 63 - E-Modul Larutan Penyangga Berbasis Guided Inquiry
P. 63
⇄
Cb (1-α) αCb αCb
+
[NH4OH] ≅ Cb dan [NH4 ] ≅ Cg
−
[ 4 + ] [ ]
Kb =
[ ]
4
[ ]
-
[OH ] = Kb 4
[ 4 + ]
-
[OH ] = Kb
[ ℎ]
-
[OH ] = Kb
[ ]
Perhitungan pH larutan penyangga basa menggunakan
rumus:
-
pOH = -log [OH ]
pH = 14-log pOH
53
3. Perhitungan pH Larutan Penyangga
