Problem- Assume an indicator works best when the equivalence point of a titration comes in the middle of the indicator range. Which indicator would be best for the following titration?
0.100 M aniline (Kb = 3.8 × 10-10) + 0.100 M HCl
alizarin yellow (10.1 - 12.0)
phenolphthalein (8.2 - 10.0)
crystal violet (0.2 - 1.8)
crystal violet (0.2 - 1.8)
erythosin B (2.2 - 3.5)
Can you describe how and why you select your answer please!