This document discusses plotting the titration curve for the titration of 50mL of 0.1M sulfurous acid with 0.1M NaOH. Key points are to label each data point with the volume added and pH, and to calculate the pH after adding specific volumes of NaOH ranging from 10mL to 150mL.

1. Use Python to plot out the entire titration curve with each point of the addition
labeled by the following style : (volume of addition ; pH value).
2. Consider the titration of 50.0mL of a 0.100M solution of the protonated form of
the sulfurous acid (H2SO3 , Ka1 =1.5×10-2 , Ka2 =6.3×10-8 ) with 0.100M NaOH.
Calculate the pH after the addition of each of the following volumes of base: (a)10.0
mL (b)25.0 mL (c)50.0 mL (d)75.0 mL (e)100.0 mL (f)110.0 mL
(g)120.0 mL (h)130.0 mL (i)140.0 mL (j)150.0 mL