Tài liệu Acid-Base

Titrations
1. How many millilitres of 0.100 M HCl are required to neutralize 25.0 mL of 0.100
M Ba(OH)2?
2. What is the molarity of a hydrochloric acid solution, 30.0 mL of which is just
neutralized by 48.0 mL of 0.100 M NaOH?
3. Exactly 50.0 mL of HOCl solution of unknown concentration was titrated with
0.100 mol NaOH. An end point was reached when 38.5 mL of the base was added.
Calculate the molar concentration of the HOCl solution.
4. What can make the titrated solution at the equivalence point in an acid-base
titration have a pH not equal to 7.00. How does this possibility affect the choice of
an indicator?
5. What is a good indicator for titrating potassium hydroxide with hydrobromic
acid? Explain.
6. In the titration of an acid with a base, what condition concerning the quantities of
reactants ought to be true at the equivalence point?