Number of results: 34,013
ORG. CHEM- Extraction Conclusion
Does this sound okay, if not how might i improve it? Thanks. In this lab the purpose states that the method of extraction is to separate and distil two different immiscible liquids, an organic layer and an aqueous layer. In this experiment an ion transfer was apparent when the...
Monday, February 12, 2007 at 7:21pm by Richard
ORG CHEM LAB
Im doing a conclusion on a lab of acetaminophen. We were to take a melting point of the crude smale of acetaminophen and melting point of the crystallized acetaminophen. The mp for crude sample: 169.2 degree C The mp for crystallized sample: 172. degree C Why the change in mp'...
Monday, February 26, 2007 at 10:25pm by Anonymous
why is it easier to remove excess acetic acid from the products than excess isopentyl alcohol? from the products of what? Did you perform an experiment in class and this is one of the lab questions? If so you will need to explain what you did in some detail; otherwise, we're ...
Wednesday, March 7, 2007 at 7:36pm by Richard
When doing an acid-base extraction, there are certain rules when chosing the solvent that is to be used in extraction.. one being that it should have a low boiling point. I understand this to be so that the solvent (in this case, ethyl) can be removed rapidly from the compound...
Monday, September 17, 2007 at 10:22pm by Jenny
Organic Chemistry- help Dr. Bob
For 1 is it just 81 mg/ (74.12 g/mol x 100) = 1.09 mol x 22.4 L= -->0.024L ??? You're answer is correct. Your math is lousy. 81 mg x (1 g/1000 mg) x (1 mol/74.12 g) = 0.00109 mol butene (or butenes if it is a mixture) and that times 22.4 L/mol = 0.02448 which rounds to 0....
Wednesday, January 7, 2009 at 11:36pm by DrBob222
C and D have a plane of symmetry,they are both meso.
Friday, April 1, 2011 at 5:50pm by NF
1. Are the following soluble, insoluble, or partially soluble. - Benzophenone in hexane? - 1-octanol in hexane? I think soluble? - 1-butanol in water? in hexane? - methyl alcohol in hexane? I think partially soluble? Please help me and explaining would be greatly appreciated.
Sunday, September 13, 2009 at 8:44pm by Chelsea
I wouldn't think benzophenone to be that polar; therefore, I would think it would be soluble in hexane. 1-octanol is insoluble in water (The Merck Index) therefore, probably soluble in hexane. 1-butanol; 9.1 mL soluble in 100 mL water @ 25 celsius according to The Merck Index...
Sunday, September 13, 2009 at 8:44pm by DrBob222
Acetone and water = miscible Acetone and hexane = miscible ***How can you explain these results, given that water and hexane are immiscible?
Monday, September 14, 2009 at 12:09am by Chelsea
The C=O bond makes acetone polar which explains its solubility in water. The carbon chain is long enough to make it soluble in hexane.
Monday, September 14, 2009 at 12:09am by DrBob222
Explain these results by considering the polarities of the alcohols and water. - 1-octanol is insoluble in water - 1-butanol is partially soluble in water Explain in terms of polarities for: - 1-octanol is soluble in hexane - 1-butanol is soluble in hexane - methyl alcohol is ...
Monday, September 14, 2009 at 1:56am by Chelsea
Explain the results in terms of polarities and/or hydrogen bonding. - water and ethyl alcohol= miscible water is highly polar and ethyl alcohol has intermediate polarity. - water and diethyl ether= immiscible water is highly polar and diethyl ether is only slightly polar - ...
Monday, September 14, 2009 at 2:05am by Chelsea
It is not that easy to do these predictions just based on polarity. You need to consider the molecule's ability to hydrogen bond (i.e. is it hydrophylic?) or contains a large hydrocarbon part which makes it hydrophobic. If we start with the alcohols, the short chain alcohols (...
Monday, September 14, 2009 at 2:05am by Dr Russ
Somewhat, but still a little confused about the individual cases. Thanks though.
Monday, September 14, 2009 at 2:05am by Chelsea
First paragraph. http://www.1911encyclopedia.org/Malonic_acid
Monday, September 14, 2009 at 5:37pm by bobpursley
Org. Chem. Please Help
I'll get you started. P(H2O)/P(org) = n(H2O)/n(org). Let's simplify some by calling H2O=w and organic = o Pw/Po = nw/no The total pressure is 1 atm or 760 mm Hg. Since the partial pressure of water at this temperature from the problem is 733 mm, then the partial pressure of ...
Monday, November 9, 2009 at 10:45pm by DrBob222
Here is the site I used to determine the empirical formula for the compound. http://en.wikipedia.org/wiki/Caryophyllene
Monday, November 9, 2009 at 11:37pm by DrBob222
A natural product (MW=150) distills with steam at a boiling temperature of 99 degrees Celsius at atmospheric pressure. The vapor pressure of water at 99 degrees Celsius is 733 mm Hg. A) Calculate the weight of the natural product that codistills with each gram of water at 99 ...
Tuesday, November 10, 2009 at 12:50am by CMM
Org Chem. I
They are drawn on the wikipedia page http://en.wikipedia.org/wiki/Carvone I would be tempted to redraw them using a Fisher projection http://en.wikipedia.org/wiki/Fischer_projection to demonstrate you understand the application of the C-I-P rules.
Monday, October 31, 2011 at 8:43pm by Dr Russ
G-chem/org. chem=>Dr. Bob222
I just looked at Dr. Bob222's post for when you initially posted this question and the setup that I gave you for part 1 differs from the setup that he gave you for part 2. I will let him resolve that for you since he has more experience in G-chem then I do, and he is probably ...
Friday, February 8, 2013 at 5:58pm by Devron