Question

# Total Volume (NaOH), mL pH Color 1 0.5 mL 3.80 Clear 2 1.0 mL 4.11 Clear 3 1.5 mL 4.31 Clear 4 2.0 mL 4.45 Clear 5 2.5 mL 4.57 Clear 6 3.0 mL 4.67 Clear 7 3.5 mL 4.75 Clear 8 4.0 mL 4.83 Clear 9 4.5 mL 4.91 Clear 10 5.0 mL 4.98 Clear 11 5.5 mL 5.05 Clear 12 6.0 mL 5.11 Clear 13 6.5 mL 5.18 Clear 14 7.0 mL 5.25 Clear 15 7.5 mL 5.31 Clear 16 8.0 mL 5.38 Clear 17 8.5 mL 5.45 Clear 18 9.0 mL 5.52 Clear 19 9.5 mL 5.60 Clear 20 10.0 mL 5.69 Clear 21 10.5 mL 5.78 Clear 22 11.0 mL 5.89 Clear 23 11.5 mL 6.02 Clear 24 12.0 mL 6.18 Clear 25 12.5 mL 6.43 Clear 26 13.0 mL 6.94 Clear 27 13.5 mL 11.8 Red 28 14.0 mL 12.26 Red 29 14.5 mL 12.47 Red 30 15.0 mL 12.61 Red 31 15.5 mL 12.72 Red 32 16.0 mL 12.8 Red Based on the experimental data, please calculate exact concentration of NaOH. Show calculation.

Answer 1