Calculate the pH at the equivalence point in the titration of
20.00 mL of a 0.100 M solution of CH3NH2 (Kb for CH3NH2 = 4.4 ×
10-4) with a 0.200 M HCl solution. (The reaction products are
CH3NH3+ and Cl-)
Calculate the pH at the equivalence point for the titration of
0.230 M methylamine (CH3NH2) with 0.230 M HCl. The Kb of
methylamine is 5.0× 10–4.
What is the pKa of the indicator?
What is the color of this indicator in a solution with pH =
6?