What is the pH of an aqueous solution that contains 0.282 M NaCN
and 0.724 M HCN?
Ka(HCN)
= 4.9 x 10-10
a.
pH = 9.72
b.
a) pH = 8.90
c.
pH = 13.23
d.
pH = 20.49
e.
pH = 9.31
What is the pH of a 0.055 M solution of sodium cyanide
(NaCN)? The Ka value for hydrocyanic acid (HCN)
is 6.2 x 10-10.
Select one:
a. 10.97
b. 10.08
c. 8.77
d. 3.03
e. 5.23
a) Calculate the pH of a 0.045 M potassium chlorite solution.
(The pKa for chlorous acid is 1.92)
b) Calculate the pH of a solution that is 0.35 M hydroxylamine
and 0.50 M hydroxylammonium chloride, (The pKb for
hydroxylamine is 7.96)
A buffer solution consists of .195 M HCN and .22 M NaCN.
a) what is the pH of this buffer solution?
b) you add 50 mL of .15 M HCl to 300.0 mL of this buffer
solution. What will the pH be?
c) You add 20.0 mL of .26 M NaOH to 150.0 mL of this buffer
solution. What will the pH be?