pH, pOH, Kw
What is the pH of 1.0 x 10^-3 M HCl?
3
What is pKa if Ka = 1.0 x 10^-5?
5
Equivalence pH of strong acid/base titration:
7
When pH = pKa, ratio of acid to base = ____
1
HF weak acid cuz:
A) strong bond
B) weak bond
C) ionic
D) metallic
A) strong bond
A solution has pOH = 5.25. What is [H+]?
5.6 x 10^-9
Calculate [H+] for 0.050 M acid with Ka = 2.0 x 10^-5
1.0 x 10^-3
A 25.0 mL sample of 0.100 M HCl is titrated with 0.100 M NaOH. What volume of NaOH is required to reach the equivalence point?
25.0 mL
[A-]/[HA] = 5. Then pH ____ pKa
a. Higher
b. Lower
c. Equal to
a) higher
Strongest acid:
A) HCl
B) HF
C) HBr
D) HI
D) HI
A 0.010 M HCl solution is diluted to 5× its volume. What is final pH?
2.70
A base has Kb = 1 x 10^-5. Find pH of 0.10 M solution
11
A 25.0 mL sample of 0.100 M HCl is titrated with 40.0 mL of 0.100 M NaOH. Final pH?
12.36
A 0.100 M weak acid has Ka = 2.5 x 10^-5. What is the pH?
2.80
The Ksp of AgCl is 1.8 x 10^-10. What is the molar solubility of AgCl in pure water?
1.3 x 10^-5
What is the pH of a solution where [OH-] = 3.2 x 10^-6 M?
8.50
Given pH = 3.00 and concentration = 0.10 M, find Ka
1.0 x 10^-5
25.0 mL of 0.100 M acetic acid is titrated with 0.100 M NaOH. Ka = 1.8 x 10^-5. What is the pH at the equivalence point?
8.72
A buffer contains 0.250 M CH₃COOH and 0.100 M CH₃COO-. Ka = 1.8 x 10^-5. What is pH?
4.34
The Ksp of CaF2 is 3.9 x 10^-11. What is the molar solubility in pure water?
2.1 x 10^-4
A solution has [H+] = 2.5 x 10^-5 M. What is pOH?
9.60
A weak acid is 2% ionized at 0.20 M. Find Ka
8.0 x 10^-5
A 50.0 mL sample of 0.200 M HF is titrated with 0.100 M NaOH. Ka = 1.0 x 10^-5. What is the pH after 30.0 mL of NaOH is added?
4.63
A buffer solution is prepared by mixing 0.300 mol of acetic acid (CH₃COOH) and 0.200 mol of sodium acetate (CH₃COO-), and there is 1.00 L of solution. The Ka of acetic acid is 1.8 x 10^-5. Then, 0.050 mol of HCl is added to the buffer. What is the final pH of the solution?
4.37
The Ksp of PbCl2 is 1.7 x 10^-5. What is solubility in 0.10 M Cl-?
1.7 x 10^-3