Saturday
August 30, 2014

Homework Help: chem

Posted by DrBob222 on Saturday, April 28, 2007 at 9:04pm.

Kw = KaKb. With this equation you can convert any Ka to Kb and the reverse.



Codeine (Cod), a powerful and addictive painkiller, is a weak base.
a) Write a reaction to show its basic nature in water. Represent the codeine molecule with Cod.
b) The Ka for its conjugate acid is 1.2 x 10^-8. What is Kb for the reaction written in a?
c) What is the pH of a .0020 M solution of codeine?

For a, I have:
Cod + H2O <==> HCod + OH-
For b, I'm a little confused. I know the conjugate acid is HCod. However, I don't know how to use that value to help me solve Kb.
I'm pretty sure I know how to solve C.

Any help is appreciated :)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chem. re+asap! - I got the rest, I just need help on the last one. My first post...
Chemistry - I have an assignment Q A 0.1 mol L-1 water solution of NH4CH3CO2 has...
chem - Is lithium hydroxide a strong or weak base? It is 100% ionized so, by ...
Chem - In acidic solution MnO4- oxidizes H3AsO3, a weak acid, to H3AsO4, a weak...
Organic Chem - Potassium tert-butoxide is a common base for E2 reactions because...
Chemistry 12 - name a compound that acts as a weak base? methanol? define the ...
Chem - where would the buffer region be on a weak acid weak base titration?
chemistry - 1. An aqueous solution of weak base B of unknown concentration is ...
Chemistry - If an equal number of moles of the weak acid HOCN and the strong ...
chem 2 - indictae the reactant that is a bronsted lowry acid. HCN(aq) +H2O (l...

Search
Members