# CHEM

posted by .

a 250.0ml buffer solution is 0.250M in ascetic acid and 0.250M in sodium acetate.

B). What is pH after addition of 0.0050mol of HCl?

C). What is pH after addition of 0.0050mol of NaOH?

• CHEM -

250 mL x 0.250M = 62.5 millimols HAc
250 mL x 0.250M = 62.5 mmols NaAc.
............Ac^- + H^+ ==> HAc
initial.....62.5..........62.5
change......-5....-5......+5
equil.....57.5.....0......67.5

Substitute into the Henderson-Hasselbalch equation and solve for pH.
The same process will work the NaOH part.
equil.....

## Similar Questions

1. ### Chemistry

I did an experiment on Buffers: In a polystyrene beaker, mix 20 ml of 0.1M Acetic acid ad 25 ml of 0.1 M sodium acetate and immediately measure the pH. Remove the electrode and add 5 ml of 0.1 M HCL to this buffer. Stir the solution …
2. ### Chemistry

IN the polystyrene beaker, mix 20mL of 0.1 M Acetic acid and 25mL of 0.1M Sodium Acetate and immediately measure the pH. Remove the electrode and add 5ml of 0.1 M HCl to this buffer. Stir the solution and measure the pH. _______________ …
3. ### Chemistry

a 250.0 ml buffer solution is 0.250 M in acetic acid and. 250M in sodium acetate. what is the ph after addition of. 0050 mol of HCL?
4. ### Chemistry

a 250.0 ml buffer solution is 0.250 M in acetic acid and. 250M in sodium acetate. what is the ph after addition of. 0050 mol of HCL?
5. ### chem

20 ml of 0.1 M Acetic acid and 25 ml of 0.1 M Sodium Acetate are mixed together. then 5ml of 0.1 M of NaOH is added. Find the Ph before the addition of NaOH and after the addition of NaOH?
6. ### Buffer

You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 93 mL of 1.00 M NaOH solution?
7. ### Buffer Solution

You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 93 mL of 1.00 M NaOH solution?
8. ### Chemistry

Calculate the pH at the following points during the titration of 100.0 mL of 0.20 M acetic acid (Ka for acetic acid = 1.8 x 10-5) with 0.10M sodium hydroxide 1. before addition of any base 2. after addition of 30.0mL of base 3. after …
9. ### Chemistry

Please help. Calculate the pH at the following points during the titration of 100.0 mL of 0.20 M acetic acid (Ka for acetic acid = 1.8 x 10-5) with 0.10M sodium hydroxide 1. before addition of any base 2. after addition of 30.0mL of …
10. ### school

What is the pH of 0.1 M formic acid solution?

More Similar Questions