Explore BrainMass

Organic Chemistry Bonding

Organic chemistry problems: Naming, Isomerism, pH

IUPAC name for CH3CH2CH2CH double bond CHCH2COOH Which exhibits geometric isomerism CH3C triple bond CH CH3CH2CH double bondCH2 CH3CH double bond CHCH3 Compound A has the molecular formula C8H14. Addition of bromine to A gives a new compound B, with the formula C8H14Br4. Treatment of A with and aqueous acid gave

Naming an IUPAC system

Name this by the IUPAC system H H / C=C / C-C C-C-C | Cl And this one: C-C-C-C-C | | F C-F

Stepwise mechanisms

Consider the reaction in attached document. What is a stepwise mechanism that accounts for both of the products shown. Please show me the mechanism. Show all intermediate structures and all electron flow with arrows. Also include resonance. In addition, what are the non-prefered products of electrophilic addition to the opposit

Acid catalyzed Fisher

Propose a detailed mechanism for the acid - catalyzed Fisher esterification of propanoic acid and ethanol. Show all resonance forms.

two structures

Please see attached...I chose c The two structures shown are: a. constitutional isomers b. enantiomers c. different resonance forms of the same species. d. difference conformations of the same species. e. 5. diastereomers

Organic Chemistry Bonding Properties

I need some help with these three questions on organic chemistry bonding: 13. Why it is important that any aldehyde used in Witting reaction be free of carboxylic acid impurities? 14. Explain why the C=C stretching mode gives rise to a rather weak IR band in 1-methylcyclohexane, while in its isomer, methylenecyclohexene,

What is the structure of the hydrocarbon?

A hydrocarbon was found to have a molecular weight of 80-85. A 10.02 mg sample took up 8.40 mL of H2 gas at 0 degrees C and 760 mm pressure. Ozonolysis yielded only two compounds shown in the attached .jpg. What is the structure of the hydrocarbon? See attached file for full problem description.

Calculate the degree of unsaturation in C4H6.

1. a. Calculate the degree of unsaturation in C4H6. b. Draw at least 4 iosmers with this formula (C4H6). 2. a. Explain why cis dichloroethene has a boiling point of 60 degrees C while trans - dichloroethen has a boiling point of 48 degrees C. b. Include drawings of the structures with dipoles in your answer.

Anti Addition

I need to paraphrase this "As a bromine molecule approaches perpendicular to the negatively charged pi cloud of the carbon-carbon double bond, its bonding electrons are repelled away from the bromine atom nearer the double bond, leaving it with a partial positive charge. As the positively charged bromine penetrates the pi cloud,

Isomers of dimethylcyclohexanediol

Here is my question. I am working through this and some other problems, and want to compare what I do against what someone who knows a lot more than me on this subject, does. Please don't do this problem if you are 1. Planning on copying and pasting something from a website (yes, I've had people do that to me here) that

Organic Chemistry Structure and Stability

1. In the bromination of n-butane, the secondary hydrogens are 20 times more reactive than the primary hydrogens. What is the product ratio of 1-bromobutane to 2-bromobutane? a. 6:4 b. 1:20 c.93:7 d. 7:93 2. Rank the free radicals (I-III) shown below in order of decreasing stability (ie, most stable to least s


1. An energy maximum in a reaction-energy diagram would be labeled as which of the following? a. Reactant b. Product c. Transition State d. Intermediate 2. Which of the following best describes the shape of the methyl free radical? a. linear b, planar c, tetrahedral d. pyramidal

5 Chemistry Problems on alkanes

1. Which of the following correctly lists the following isomeric alkanes in order of increasing boiling point? n-hexane, 2,3-dimethylbutane, 2-methylpentane a. n-hexane < 2-methylpentane < 2,3- dimethylbutane b. 2-methylpentane < 2,3-dimethylbutane < n-hexane c. 2,3-dimethylbutane < 2-methylpentane < n-hexane d. n-hexa

Assorted Chemistry Problems

1. Draw the structure of bicyclo [3.2.0] heptane. 2. Consider the following compounds: CH3-CH2-CH2-CH2-CH3 CH3-CH2-CH2-NH-CH3 CH3-CH2CH2-CH2OH Predict their relative boiling points (rank from low (1) to (3)). Explain answer in terms of the intermolecular forces involved. 3. Draw a three-dimensional structure of CH3C

Academic Approach to Chemistry

1. The C-O-C bond angle (degees) in the compound CH3-O-CH3 is closest to a. 90 b. 109 c. 120 d. 180 2. Which of the following molecules would be expected to be MOST water soluble? a. CH3-CH2-CH2-CH2-CH3 b. CH3-CH2-O-CH2-CH3 c. HOCH2-CH2-CH2OH d. ClCH2-CH2-CH2Cl 3. The relationship between CH3CH2OH and HOCH2C

The number of different constitutional isomers

1. The number of different constitutional isomers that can be drawn for C2H4Br2 is equal to a.1 b. 2 c.3 d. 4 2. The order of boiling points of the simple alkanes CH4, C2H6, and C3H8 is a. CH4 < C2H6< C3H8 b. CH4 > C2H6> C3H8 c. C2H6 < CH4 < C3H8 d. CH4 < C2H6 > C3H8 3.Which of the following statements about

Newman projections and conformations

(See attached file for full problem description) 1. Draw Newman Projections constructed by looking down the indicated carbon-carbon bond in the following molecule and make a graph of energy versus dihedral angle. 2. Predict the most stable conformation of hexane. Draw a line wedge formula for this confirmation (hint: consi

Academic response to Chemistry

Which of the following structures contain atoms with a formal charge? Indicate the atom and the charge. Do any of the structures have a net (non-zero) charge? See attached for structures Describe the type of bonding that occurs in H-CH2-OH


I have a problem with reactions. CH3-CH2-C-CH3 + (O) THERE IS AN -OH AND A METHYL ATTACHED TO THE SINGLED OUT -C And also the same problem, but reacting with H+

Chemistry Problems

1. A sample of unknown Y is subjected to elemental analysis. The following percentages by weight are found to be: C 40.0% H 6.7% O remainder of % by weight The molar mass is found to be 60.0 g A. Calculate the empirical formula (show work) B. What is the molecular formula of unknown Y. (Include r

Organic Chemistry

Organic chemistry structural problem with for Methyl Ketone: In organic chemistry, there is a ketone structure that has the carbon bonded twice with the oxygen(C=O)with two components on the side...the question is how or where do I attach the methyl(CH3) on to this Ketone structure? (See attachment for diagram)

Conversion for a Specific Product

Indicate the reaction conditions you would employ to accomplish the following: a. Conversion of tert-butyl chloride to 2-methylpropene to maximize the yield of the elimination product over the substitution product. b. The conversion of tert-butylchloride to tert-butyl ethyl ether to insure the highest possible yield of the eth

Compound or Isomer

For each of the (attached) compounds, identify them as 1) the same or 2) constitutional isomers or 3) geometric isomers or 4) enantiomers or 5) different compounds that are not isomers.

Momsaccharides/products, linkage, benedicts, acetal etc

Please see attached for diagram ... Questions: Will this disaccharide give a positive Benedict's test? Why or why not? Does this structure have a hemiacetal, hemiketal, acetal, or ketal system? Locate it on the drawing & give appropriate label. Upon hydrolysis with the appropriate enzyme, what will be the products?

Physical Properties

Hi. We were given a practice sheet with review questions. Can you briefly tell me why on each so I can apply it on test? Thanks. Higher solubility - Butanedioic acid or Butanal Higher mp - 2,3-dihydroxy propanal or Pentanal Lower mp - Sodium octanoate or Octanoic acid Lower solubility - 2-hexanone or 2-hexanol