Question

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??
Use the Henderson-Hasselbalch equation to find the initial pH.
Then complete the ICE chart I've started below for the second part and substitute the final mmoles into the HH equation. (which may help you on the first part, too).
begin = 20 mL x 0.1M = 20 mmoles CH3COOH.
begin = 25 mL x 0.1M = 25 mmoles CH3COONa
add 5mL x 0.1M NaOH = 5 mmoles OH-
.......CH3COOH + OH^- ==> CH3COO- + H2O
begin....20......0.........25.......0
add .............5...................
react....-5.....-5........+5........+5
final....
Iam not quite clear about how to find the Ph before the additon NaoH... could you please show me how to solve...

Related Questions

24 mL of 0.39 mol/L acetic acid is titrated with a standardized 0.33 mol/L KOH solution. Calculate t... 1. Ethanoic acid (acetic acid) is very soluble in water. However, naturally ocurring long-chain carb... The pK of acetic acid is 4.76. Which statement is true at pH 5.0? [A^-] = [HA] [A^-] < [HA]... How much more acetic acid (pKa = 4.76) than acetate should be in solution to maintain a pH of 4.00? 7.0 mL of 0.5 M acetic acid contains 0.0035 moles of acetic acid. how many moles of sodium bicarbona... Acetic acid has a Ka = 1.75 x 10-5 and formic acid has a Ka = 1.8 x 10-4. Which is the stronger aci... acetic acid and oxalic acid exist in different states at room temperature. one is a liquid the other... Tf (acetic acid) = 16.1°C Tf (with 3.00g of solute in 10.00mL of acetic acid) = - 2.5°C Use the...