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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
