Tuesday, March 3, 2009

Larutan Penyangga (Buffer)

Larutan penyangga adalah larutan yang dapat mempertahankan pH dari pengaruh penambahan sedikit asam (H+), Penambahan sedikit basa (OH-) atau penambahan sedikit air ( pengenceran ).
Buffer ada 2 Yaitu :

  1. Buffer Asam
Penyusun : Asam lemah + basa Konjugasinya ( Garam )
Contoh : CH3COOH + CH3COONa
CH3COOH + ( CH3COO)2Ca

RUMUS : [H+] = Ka x na/ng


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