The Making and Use of BufferspH 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 12.241.90 12.34