Acid-Base Equilibria And Buffer Solutions Worksheet With Answers Page 4
ADVERTISEMENT
1
2
3
4
5Chem 1B
Chapter 15 Exercises
Exercise #2: Acid-Base Titrations
1.
In a titration experiment, 40.0 mL of 0.100 M HCl is titrated with 0.100 M NaOH solution. Determine
the pH of the solution:
(a) before NaOH is added;
(b) after 20.0 mL of NaOH is added;
(c) after 30.0 mL of NaOH is added;
(d) after 40.0 mL of NaOH is added;
(e) after 45.0 mL of NaOH is added;
(f) after 50.0 mL of NaOH is added.
(Answers: (a) pH = 1.000; (b) pH = 1.48; (c) pH = 1.85; (d) pH = 7.00;
(e) pH = 11.77; (f) pH = 12.05
–
5
2.
In another acid-base titration, 40.0 mL of 0.100 M acetic acid (CH
COOH, K
= 1.8 x 10
) is titrated
3
a
with 0.100 M NaOH solution. Determine the pH of the solution:
(a) before NaOH solution is added;
(b) after 20.0 mL of NaOH is added;
(c) after 30.0 mL of NaOH is added;
(d) after 40.0 mL of NaOH is added.
(e) after 45.0 mL of NaOH is added.
(f) after 50.0 mL of NaOH is added.
(Answers: (a) pH = 2.87; (b) pH = 4.74; (c) pH = 5.22; (d) pH = 8.72;
(e) pH = 11.77; (f) pH = 12.05)
4
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education