LAPORAN PRAKTIKUM 3 pH METER, BUFFER ... - OpenWetWare
LAPORAN PRAKTIKUM 3 pH METER, BUFFER ... - OpenWetWare
LAPORAN PRAKTIKUM 3 pH METER, BUFFER ... - OpenWetWare
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HASIL <strong>PRAKTIKUM</strong><br />
Tabel 1 : Ringkasan hasil pembuatan buffer fosfat<br />
<strong>pH</strong> tujuan Volume<br />
0.25M<br />
Na2HPO4<br />
(ml)<br />
Volume 0.25M<br />
NaH2PO4 (ml)<br />
Volume buffer<br />
fosfat(0,125M)<br />
yang disiapkan<br />
(ml)<br />
6,3 40 30 140<br />
6,8 40 8 96<br />
7 35 11 92<br />
7,5 40 1,5 83<br />
7,8 40 1 82<br />
Perhitungan Volume buffer fosfat (0,125M) yang disiapkan<br />
V1 x M1 = V2 x M2<br />
(40 + 30)x 0,25 = V2 x 0,125<br />
V2 = 82 ml<br />
Grafik 1. Hasil pembuatan buffer fosfat<br />
VOLUME (mL)<br />
160<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
1 2 3 4 5<br />
KELOMPOK<br />
<strong>pH</strong> Tujuan<br />
Volume 0.25M Na2HPO4 (ml)<br />
Volume 0.25M NaH2PO4 (ml)<br />
Volume buffer fosfat yang<br />
disiapkan (ml)