pH and Titrations Review Problems

4a.) The hydronium concentration is greater than the hydroxide concentration.

6.) a. neutral
b. basic
c. neutral
d. acidic
e. neutral
f. acidic
g. basic

8.) a. hydronium conc = 3.0 x 10^-2 M, hydroxide conc = 3.3 x 10^-13 M
c. hydronium conc = 5.0 x 10^-3 M, hydroxide conc = 2.0 x 10^-12 M

9.) a. 2.00
b. 3.00
c. 5.00
d. 4.00

11.) a. 12.00
b. 11.00
c. 10.00

13.) a. 1 x 10^-3 M
b. 1 x 10^-7 M
c. 1 x 10^-11 M
d. 1 x 10^-5 M

15.)a. 5.9 x 10^-5 M
b. 2.2 x 10^-8 M
c. 3.3 x 10^-10 M

16.) a. 2.0 x 10^-3 M
b. 5.0 x 10^-12 M
c. 1.1 x 10^-2 mol HNO₃
d. 0.69 g HNO₃
e. PLEASE IGNORE!

20.) a. The end point is reached when the unknown solution has been completely neutralized. This happens when the two substances (acid and base) are present in chemically equivalent amounts.
b. The indicator is present to change colors when the end point is reached.

24. a. 1.0 mol NaOH
b. 0.75 mol HNO₃
c. 0.10 mol Ba(OH)₂
d. 0.90 mol H₂SO₄

25.) 7.50 x 10^-2 M KOH

26.) 3.02 x 10^-2 M HNO₃