Organic Chemistry?
Q. Just a few things I'm stuck on: 1. Why is an alkyl group equivalent to an alkane molecule less 1 hydrogen atom? 2. Why does a functional group remains unchanged in most chemical reactions and vary from member to member by -CH2? 3. Why does 1,2-ethanediol have a higher melting point than, acetylene (ethyne), ethane ot 1,1,1-trichloroethane? 4. Why is 1-pentanol an isomer of 2-methyl-2-butanol? First person to explain these question in simple chemistry language get 10 points!!! Thanks
Asked by shortround325 - Sat May 31 01:53:18 2008 - Chemistry - 1 Answers - Comments

A. 1. The alkyl group is a substituent group that is bonded to the "main molecule." Therefore, one of the hydrogens of the corresponding alkane will actually be replaced by the "main molecule," in order for the octet rule to still apply. Hope that makes sense. 2. I don't know what you're asking... functional groups change in many chemical reactions. 3. 1,2-ethanediol has two -OH groups (this is what makes it a diol). Since this gives the diol extra oxygens and hydrogens, it allows the molecule to form hydrogen bonds with each other and, if it is in aqueous solution, with water molecules. This will raise the melting point since these bonds and interactions must be broken in order for these molecules to go into the gaseous… [cont.]
Answered by Christine Belson - Sat May 31 02:18:24 2008

What is 1,1,1 Trichloroethane ?
Q.
Asked by Hoover464 - Mon Mar 27 02:17:54 2006 - Chemistry - 2 Answers - Comments

A. (m) 1,1,1-Trichloroethane (1,1,1-TCA) is an organic liquid with a chloroform-like odor. It is largely used as a solvent removing grease from machined metal products, in textile processing and dyeing and in aerosols.
Answered by mallimalar_2000 - Mon Mar 27 02:23:07 2006

Why is 1,1,1 trichloroethane a better solvent for a caffiene extraction than water ?
Q.
Asked by Too Uncool - Wed Dec 16 22:51:15 2009 - Chemistry - 2 Answers - Comments

what is the density of 1,1,1-trichloroethane in g/ml?
Q. please if possible provide some website. thanks.
Asked by fall - Tue Jul 29 02:20:28 2008 - Chemistry - 2 Answers - Comments

A. Its density is 1.32 g/ml Check this out:
Answered by Nombers - Tue Jul 29 02:33:37 2008

Select all cases where the substance shown has a molecular dipole?
Q. H2CCH2 ethene sf4 sulfur tetrafluoride C4H8 cyclobutane ph3 phosphine ch3CH2CO2H propionic acid ch3CCl3 1,1,1-trichloroethane None
Asked by terry - Fri Dec 2 18:11:58 2011 - Chemistry - 1 Answers - Comments

A. PH3 and propionic acid The rest are non polar. All alkanes (butane, cyclobutane etc...) are non polar because the molecule is a symmetrical ring. Most acids are polar. You need to visualize (or look up) the structure of a molecule to tell if its polar. Usually you can tell by the shape, if it looks like you have a bunch of atoms of one element on one side then its likely to be polar.
Answered by Dr. M - Fri Dec 2 18:18:39 2011

why is 1,1,1 trichloroethane used with iodide in a iodine titration?
Q.
Asked by richard b - Thu Nov 13 20:48:45 2008 - Chemistry - 1 Answers - Comments

A. 1,1,1 trichloroethane is not used in all iodine related titrations. It is primarily used as a solvent (with Wij's solution) in the determining the Iodine number (also called the Iodine index) of unsaturated fatty acids. It is used because it is a good solvent for fats and oils and does not interfere with the sodium thiosulfate or iodine in the final titration.
Answered by Richard - Sun Nov 16 10:58:29 2008

What is 1,1,1 Trichloroethane ?
Q.
Asked by Hoover464 - Mon Mar 27 02:24:16 2006 - Chemistry - 3 Answers - Comments

A. Ethane is satuarted hydrocarbon of two carbon atoms linked in a chain through a single bond. Three times 1 indicates that all of the three (Tri) chloride are attached with first of the two carbons of ethane. The formula of the compound is Cl3C-CH3. The naming you reffered is based on IUC system and IUPAC system.
Answered by dr_ibad_khan - Tue Mar 28 10:51:18 2006

Which one can hydrogen bond?
Q. Select all substances with an acceptor atom that can hydrogen bond to a hydrogen atom that is part of a polar covalent bond. CF2CH2 1,1-difluoroethene ch3CH2CO2H propionic acid ch3Cl chloromethane ch3CCl3 1,1,1-trichloroethane fccf difluoroacetylene bbr3 boron tribromide None
Asked by swimmer29 - Thu Feb 4 18:18:52 2010 - Chemistry - 1 Answers - Comments

A. Propanoic acid and Difluoroacetylene because they each contain fluorine or oxygen. In order to hydrogen bond, a compound must contain fluorine, oxygen, or nitrogen
Answered by - Thu Feb 4 18:26:48 2010

Where can I obtain tippex thinner (1,1,1 trichloroethane) or a substitute of it?
Q.
Asked by folkestonegirl75 - Mon Jul 10 16:49:26 2006 - Other - Home & Garden - 4 Answers - Comments

A. I was beaten to my answer...nail varnish remover. Make sure you add it a drop at a time & be careful of the furniture in case of spillage. I t doesn't take much to thin it but you might be better off just buying another bottle of tippex. Nail varnish remover is a very short term answer. :-)
Answered by MISS B.ITCH - Mon Jul 10 17:00:26 2006

1,1,1-trichloroethane reacting to make 1,1-dichloroethene what is the condensed answer?
Q.
Asked by belinda_smile2000 - Tue Mar 25 01:51:28 2008 - Homework Help - 1 Answers - Comments

A. Cl3C-CH3 ---> Cl2C=CH2 + HCl
Answered by WhatGoes Around Comes Around - Tue Mar 25 06:13:20 2008

How can I use 1,1,1-trichloroethane to wash my hair without getting any in my eyes?
Q. It stings!
Asked by - Sun Nov 6 14:27:45 2011 - Polls & Surveys - 5 Answers - Comments

A. smear petroleum jelly on your peepers... lol always, Ladyitch
Answered by Ladyitch - Sun Nov 6 14:42:53 2011

Chem problem- Saturated solution of I2 in h20 is dilute... help!?
Q. A saturated solution of i2 in water is very dilute; that is, I2 is not very soluble in water. WHen 1, 1, 1-trichloroethane (CH3-CCl3) is mixed with I2-water and shaken, the water and CH3-CCl3 separate, with the top layer. At the same time, the I2 moves from the water into the 1,1,1-trichloroethane. Explain why the I2 moves into the CH3-CCl3 layer.
Asked by kfizzzlepimpdawg - Tue Mar 8 05:22:28 2011 - Chemistry - 1 Answers - Comments

A. Trichloroethane is far less polar than water (which is also shown by the fact that the water and trichloroethane don't mix) Iodine is a nonpolar molecule (hence its very low solubility in water) but will dissolve readily in nonpolar solvents (such as trichloroethane.)
Answered by - Tue Mar 8 05:25:23 2011

Shop Question, What's the best brand and type of tap for power tapping metal with a air ratchet..?
Q. I usually just use the stock taps at work but I'm getting into road service work and want to buy a nice durable set for myself. I like the 2 flute taps because their strong but Whats the good brand. Also, I've never used spiral taps, are those better for hand power tapping than 2 flutes. Just for fun, give a nod if you miss the old school tap magic with the 1,1,1 trichloroethane. Nothing out there works the same or as good. I said air ratchet which I use all the time and never break taps, not air impact and 111 was also used to develop photographs, what's your point? Dont say you have something better and then not say what it is.
Asked by - Sun Mar 28 12:33:57 2010 - Maintenance & Repairs - 2 Answers - Comments

A. Don't buy Chinese tooling, have done lots of power tapping, wouldn't try impact ratchet either, used a lot of drill motors with torque limiters. Proto used to make decent taps, titanium tipped as long as their made in the U.S., Germany, Swiss or even the Japanese makes good tooling, and I also liked Tap Magic, I still have a partial can hid back if I was able to find it, has been 6 years since I left industry, Starrett machining instruments were always my favorite to use.
Answered by - Sun Mar 28 13:08:14 2010

Hydrogen Bonding Question!?
Q. Select all substances with an acceptor atom that can hydrogen bond to a hydrogen atom that is part of a polar covalent bond. (HO)2SO sulfurous acid CH3CCl3 1,1,1-trichloroethane F2 difluorine CH3CH2CH2OH propanol CH3CF3 1,1,1-trifluoroethane CH3CH2CO2H propionic acid None
Asked by Stephen C - Sat Apr 23 20:43:15 2011 - Chemistry - 1 Answers - Comments

A. Sulfurous acid, propanol, and propionic acid.
Answered by TheOnlyBeldin - Sat Apr 23 20:44:46 2011