Homework Help: chemistry

Posted by khin on Thursday, May 13, 2010 at 6:13am.

Chloroacetic acid has a relatively large equilibrium constant, so at low acid concentrations it is necessary to use the quadratic equation in order to calculate the concentrations of the aqueous species. Ka for ClCH2COOH is 1.4 ´ 10-3. For the problems that follow, consider one liter of a solution that originally had 0.0200 mol of chloroacetic acid.

What is the equilibrium concentration of [ClCH2COOH]?

a. 0.010

b. 0.012

c. 0.015

d. 0.017

chemistry - DrBob222, Thursday, May 13, 2010 at 11:01am
ClCH2COOH ==> ClCH2COO^- + H^+

Ka = (H^+)(ClCH2COO^-)/((ClCH2COOH)
(H^+)=x
(ClCH2COO^-)=x
(ClCH2COOH) = 0.02-x
chemistry - Anonymous, Friday, May 28, 2010 at 1:44am
a. 0.010
chemistry - Jaime, Friday, July 20, 2012 at 2:24am
The answer is C).015

Find x through the quadratic equation x^2^ +(1.4E-3)x - (2.8E-5)=0

Answer this Question

Related Questions

Hayden - Chloroacetic acid has a relatively large equilibrium constant, so at ...
Chemistry - Write the equation for the equilibrium that exists when nitrous acid...
chemistry - Stearic acid, nature's most common fatty acid, dimerizes when ...
chemistry - A classic experiment in equilibrium studies dating from 1862 ...
chemistry - A diprotic acid solution H2A has a molarity of .95 M. the ...
CHEMISTRY HELP!! - Formic acid (HCHO2) is a component of bee stings. It is a ...
Chemistry - Need help with AP chemistry, specifically Acids and Bases The acid ...
Chemistry - A 0.10 M solution of a weak acid has a pH of 3.5 at 25%C. What is ...
chemistry - A 0.010 M solution of a weak monoprotic acid is 3.0% dissociated. ...
chem - sorry . Can you please help me with this questions If you know? Oxalic ...

For Further Reading

First Name:
School Subject:
Answer: