Tuesday
March 31, 2015

Homework Help: chemistry

Posted by A on Thursday, May 30, 2013 at 6:04pm.

What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from.
Answer
A.
pH >14, using 2.5 M NaOH (aq)
B.
pH 1, using 0.1 M HCl (aq)
C.
pH 6.2, using 0.1 M NaHCO3 (aq)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

university chemistry - this is for a chemistry laboratory experiment called "how...
chemistry - What should be the pH of the aqueous layer to extract caffeine? ...
chemistry - 1)when benzoic acid and quinine is dissolved in CH2Cl2 and added 2M ...
CHEM Help please Thanks - 8) Explain exactly how you would perform the following...
Chemistry - Which one of the following pairs of 0.100 mol L-1 solutions, when ...
Chemistry Urgent Help Please! - You use 100 ml ethylchloride (density 0.92 g/ml...
Org. Chem. - what is the precipitate formed when HCl is added? I believe the ...
Organich Lab Help Please!!!!!!!! - You use 100 ml ethylchloride (density 0.92 g/...
Chemistry Urgent Help and Check Please! - a) You use 100 ml ethylchloride (...
Organich Lab Help Please!!!!!!!! - a) You use 100 ml ethylchloride (density 0.92...

Members