Question
The Making and Use of Buffers
pH deionized water(estimated with bromothymol blue): color was green/light yellow, pH estimated bellow 7;between 6.5-7.
Table 1: Addition of acid and base to distilled water.
mL of HCl added
Experimental pH
mL of NaOH added
Experimental pH
-0.00
6.50
0.00
6.89
-0.10
2.96
0.10
9.50
-0.50
2.50
0.20
10.95
-0.70
2.35
0.30
11.19
-1.00
2.22
0.50
11.74
-1.31
2.21
0.80
11.88
–1.60
2.00
1.10
12.05
-1.90
1.94
1.30
12.11
-2.20
1.90
1.40
12.
-2.25
1.82
1.60
12.24
1.90
12.34
