Arsenic acid (H3AsO4) has Ka values of 2.5 x 10–4, 5.6 x 10–8,
and 3 x 10-13. What is the concentration of the HAsO42- dianion in
a solution whose initial arsenic acid concentration was 0.35 M?
A 0.122 M monoprotic acid has a Ka of 5.7 x
10-4
What is the pH of the solution?
What is the pOH of the solution?
What is the percent dissociation of the
acid?
Calculate [H3O + ] for a 2.5 x 10-4 M solution of weak acid (Ka
= 5.3 x 10-4 )
A.
1.4 x 10-4 M
B.
2.1 x 10-4 M
C.
6.2 x 10-4 M
D.
7.3 x 10-4 M
E.
1.9 x 10-4 M
The Ka of benzoic acid is 6.5 x 10 ^(-5)
a) Calculate the pH of a 40.00 mL, 0.1 M benzoic acid buffer
solution after the addition of 20.00 mL of a 0.1M NaOH
b) Calculate the pH of a 40.00 mL, 0.1 M benzoic acid buffer
solution after the addition of 50.00 mL of a 0.1M NaOH
REDOX TITRATION
2) Express the reactions for potassium permanganate titration
with sodium oxalate: Hint: include the 2 half-reactions.
3) What is the...