Calculate the pH of the solution after the following addition to the 40.0 mL sample of 0.225MCH3COOH (Ka=1.8 x 10 5)
C)42.4 mL0.175 M NaOH
Step 2: Identify the initial moles of each reactant. Round each answer to FIVE places past the decimal.
0.00900
mol H+(from CH3COOH)
0.00742
mol OH-(from NaOH)
Step 3: Determine what is present after neutralization, and identify the conditions of this solution. Round each answer to FOUR places past the decimal
H+
is present in excess
Because this solution contains a buffer(WA and WB
, the solving method entails using Henderson-Hasselbalch
[CHCOOH]after neutralization: 0.0192
M
o [CH3COO] after neutralization: 0.0898
M
On the titration curve, this is at/in the buffer region
Step 4: What is the pH? Round your answer to TWO places past the decimal.
type your answer..