Homework Help: CHEM 111

Posted by Anonymous on Thursday, June 9, 2011 at 8:58pm.

What is the Ka value of acetic acid from the pH of the buffered solution? pH=4.39 of 25ml of HC2H3O2 with .410g NaC2H3O2 added.
Ka = [H3O][C2H3O2] / [HC2H3O2]

CHEM 111 - DrBob222, Thursday, June 9, 2011 at 10:41pm
Use the Henderson-Hasselbalch equation.
pH = pKa + log[(base)/(acid)]
Solve for pKa and convert to Ka.

Answer this Question

Related Questions

Buffer Solutions - A buffered solution is made by adding 75.0g sodium acetate to...
school - What is the pH of 0.1 M formic acid solution? Ka=1.7„e10-4? What ...
CHEM - 25.0 CM3 OF 0.100M acetic acid is titrated with 0.900M of NaOH. Ka for ...
chemistry - A. Strong Base 1.) What is the concentration of a solution of KOH ...
Chem - What is the pH of the resulting solution if 30.00 mL of 0.100M acetic ...
Chemistry - Calculate the pH of a 100mL solution of 0.10M acetic acid ka=1.8x10...
chem - what is the pH of a solution that is 0.40 M in sodium acetate and 0.60 M ...
Chemistry - IN the polystyrene beaker, mix 20mL of 0.1 M Acetic acid and 25mL of...
Chem - Calculate the pH of a solution composed of 155mL of 0.1 M acetic acid and...
chemistry - A student prepared a .10M solution of acidic acid. Acidic acid has a...

For Further Reading

First Name:
School Subject:
Answer: