# Chemistry

posted by .

If the Kb of a weak base is 2.6 × 10-6, what is the pH of a 0.24 M solution of this base?

• Chemistry -

Call the weak base ANH2
........ANH2 + HOH ==> ANH3^+ + OH^-
I.......0.24.............0........0
C.........-x.............x........x
E......0.24-x............x.........x

Kb = (ANH3^+()(OH^-)/(ANH2)
Substitute from the ICE chart and solve for x = (OH^-) and convert to pH.

## Similar Questions

1. ### Chemistry

If an equal number of moles of the weak acid HOCN and the strong base KOH are added to water, the resulting solution will be acidic, basic or neutral?
2. ### Chemistry

When 23.3 mL of 0.14 M HCl are added to 50.0 mL of a 0.16 M solution of a weak monoprotic base, the pH of the solution is 10.50. What is the Kb of the weak base?
3. ### chemistry; acids and bases

Since Ka x Kb = Kw, is the conjugate base of a weak acid a weak base or a strong base?
4. ### chemistry

A 4.50e-2 M solution of unknown monoprotic weak base has a pH of 10.200 what is the value of kb for the base
5. ### Chemistry 12

name a compound that acts as a weak base?
6. ### chemistry

A 1.0 M acetic acid solution (CH3COOH, pKa = 4.7) is neutralized by dissolving NaOH(s) (a strong base) in the solution. Estimate the pH at the equivalence point of the neutralization process: 4.7 7.0 9.3 Which one of the following …
7. ### analytical chemistry

A solution containing 0.40 M B (a weak base) and 0.20 M BH+ (the salt of the weak base) has a pH = 10.30. What is the pH after 25 mmol of HCl is added to 250 mL of this solution?
8. ### AP Chemistry

A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base, or …
9. ### AP Chemistry

A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base, or …
10. ### Chemistry

If the pH of a 0.46 M aqueous solution of a weak base is 9.2, estimate the Kb of the base:

More Similar Questions