V. HASIL PENGAMATAN DAN PEMBAHASAN 5.1 Hasil PengamatanTabel 1. Hasil pengamatan pembuatan larutan bufferKelompok pHBerat garam (g)Volume asam (ml)pH meterKertas pH

655,23882,08575,165

74,52,92053,68574,074

841,22054,86913,494

94,84,30422,7254,345

105,56,97540,885,275

(Sumber : Dokumentasi Pribadi, 2012)Perhitungan:Kelompok 6

pH= 5

pH = pKa + log

5 = 4,76 + log

log = 0,24

= 1,7378x = 1,7378 1,7378x2,7378x = 1,7378x = 0,6347 (garam)

Garam :

= .

0,6347 = .Massa = 5,2388 gram

Asam :

= .

0,0365 = .Massa = 2,19 gram

V asam =

V asam =

V asam = 2,0857 ml