Haloethanes (CH3CH2X, X = Cl, Br, I) have similar barriers to rotation (13.4–15.5 kJ/mol) despite the fact that the size of the halogen increases, Cl ? Br ? I. Offer an explanation.

Q: CH3CH2OH CH3-O-CH3 CH2=CH2 CH4 CH3-NH2 C6H14 H20 CHCH Capable of Hydrogen Bonding Not capable of…

A: Hydrogen bonding is a type of dipole-dipole intermolecular forces.  It occur when hydrogen is bonded…

Q: (a) Draw four compounds with molecular formula CH120, each containing at least one different…

A: (a) The molecular formula of the compound is C6H12O. It compound contains, six carbon atoms, twelve…

Q: Is 2-methyl-2,3-pentadiene chiral? What about 2-chloro-2,3-pentadiene?

A: No. 2-methyl-2,3-pentadiene is not chiral because it exhibits plane of symmetry passing through the…

Q: Consider the rotational energy diagram: 60 120 180 240 300 360 Dihedral angle (degrees) Which of the…

A: We have find out correct statement

Q: Arrange the following in increasing order of boiling point:(i) CH3CH2CH2CH2Br(ii) (CH3)3.Br(iii)…

A:

Q: In which species is hydrogen bonding present? A. CH3NH2 B. Xe C. C(diam) D. BaCl2 E. H2CO

A: Hydrogen bonds form when hydrogen is attached to a more electronegative atom generally F,O, N.   It…

Q: Cyclopropane and cyclobutane have similar strain energy despite the fact that the C—C—C bond angles…

A: INTRODUCTION: Structures of cyclopropane and cyclobutane are shown below:

Q: Which of the following has an improper axis of rotation, Sn (n > 2)? a. ammonia b. iodomethane c.…

A: If we consider any molecule, and rotate it to get the identical structure, and then reflect it in a…

Q: What is difference between chain conformation and configuration, compare and contrast. What is…

A:

Q: 1. Which molecule representation best shows the bond interactions? a. Wedge and dash b. Sawhorse c.…

A: Given: 1. Which molecule representation best shows the bond interactions? 2. Which molecule…

Q: Explain the observed trend in the melting points for four isomers of molecular formula C,H16. mp…

A: The ability of the molecule to pack more tightly increases the melting point. The melting point of…

Q: 1 ethel 2 isopropylcyclohexane Which structure would be most stable cis?

A: Cis - Groups are on same side. Either above or below the plane. Trans- Groups are on opposite…

Q: What is the 3D representation of these chemicals BeCl2 NCl3  BrCl3 BrF5

A: Given molecules,

Q: Propanal, an aldehyde with the formula CH3CH2CHO, and n-propylamine have identical molecular weights…

A: Propanal,  CH3CH2CHO is more polar than n-propylamine.  The polarity in propanal is due to the -C=O…

Q: Part B: NH2

A: A question based on molecules that is to be accomplished.

Q: Propose structures for molecules that meet      the following descriptions:     (a) Contains two…

A: Carbon atom attached to four other atoms has sp3 hybridization getting a tetrahedral arrangement.…

Q: The potential energy of a CH3 group in ethane as it is rotated around the C-C bond can be written V=…

A: For fully eclipsed conformation, Angle = 1800 V= 12V0(1 +cos(1800)  =0

Q: Which of the following compounds is chiral. H;C H,C CH, H,C CH, CH, CH,

A: The compound having 4 different group around the carbon atom are chiral. And the chiral compound…

Q: C7H9N has 4 degrees of unsaturation, what are the possible structures?

A: 4 degree of unsaturation means 1  three bi bonds + 1 ring                   OR2  two bi bonds + 2…

Q: Perform a conformational analysis of 2-methylbutane, (CH3)2CHCH2CH3, looking down the C2-C3 bond.…

A: The different structures obtained by the rotation of C3 about the C2- C3 bond by 600 are shown…

Q: how many degree of unsaturation are there in caffeine, C8H10N4O2? (Please show how do you know) A.…

A: Given chemical compound is  C8 H10 N4 O2                                                      (…

Q: What is the degree of unsaturation of C8H10ClNO?        a. 4 b. 5 c. 6 d. 7

A:

Q: Cyclopropane and cyclobutane have similar strain energy despite the fact that the C—C—C bond angles…

A: The strain angle for cyclopropane is 600 and for cyclobutane is 900.

Q: If cyclopentane were planar and each eclipsing interaction costs 4.0 kJ/mol, how much torsional…

A:

Q: H H. hydrogen peroxide H Br Br CI 1,2-dibromo-1,2-dichloroethane boric acid, planar conformation

A: Molecules can be classified as polar or non polar depending upon the electronegativities of the…

Q: Which molecule produces the following plot of potential energy versus rotation of the C2-C3 bond?…

A: Our correct answer is Butane. Option b) butane   The graph below is explanation of their conformers:…

Q: Define staggered conformation ?

A: When the molecular formula of two or more compounds is the same, but the spatial arrangement of…

Q: Which of these structures shows how the pictured molecule will look after it is rotated by 180°, as…

A: Given : Molecule of a cyclo alcohol. To find : Structure after 180 degree rotation. Solution :…

Q: Construct the three-dimensional model of 2-methylhexane, also draw the anti and gauche models where…

A: We have to bdraw the Newman projection of 2-methylhexane such that rotation between carbons 3 and 4…

Q: H3C, OH H3C CH3 CH3 CH3 ČH3 H,C CH, HO CH3 Violaxanthin How many double bonds in this terpenoid…

A: The considered compound is a terpenoid compound, Violaxanthin.

Q: Consider the three structures. 1,1-dimethylcyclobutane 1,1,3,3,5,5-hexamethylcyclohexane staggered…

A: Angle strain: The value of the bond angle of the sp3 hybridized carbon atom is 190.5o. The value of…

Q: The eclipsed conformation of CH3CH2Cl is 15 kJ/mol less stable than the staggered conformation. How…

A:

Q: Build the molecular models of cis-1,2-dichlorocyclopentane and trans-1,2-dichlorocyclopentane. Then…

A: Cis-1,2-dichlorocyclopantane and trans-1,2-dicyclopantane are enantiomers or superimposed mirror…

Q: Arrange the following in DECREASING order of boiling point. heptane 2,4-dimethylpentane…

A: Boiling point is the temperature, at which vapour pressure become equal to atmospheric pressure.

Q: What is the C-P bond order in BrCP?

A: Bondorder of each bond can be predicted by using octate rule.  Octate rule states that total number…

Q: Which Possesses the least nonbonding interaction (steric) strain? (-Bu -Bu VS. CH3 CH3

A: least steric strain is present in B

Q: 2. (a) Define and give one example of a geometry that is coordinatively unsaturated. (b) Define and…

A: COORDINATIVELY UNSATURATED GEOMETRY: A compound which has metal central atoms that are bonded to…

Q: BR H CH3 Is this molecule chiral? If yes, please determine if it is R or S.

A:

Q: .F HO, (i) Assign the configuration of the chiral centre(s) in molecule 1. (ii) Draw the lowest…

A: The solutions are given below -

Q: Using data from the table below, estimate the percentage of cyclohexanol, C6H11OH molecules that…

A: For cyclohexanol, the conformation where the substituent (-OH) is at axial position is less stable…

Q: Explain why benzene has a lower boiling point but much higher meltingpoint than toluene ? (See…

A: The intermolecular attraction in benzene and toluene are similar, moreover, both compounds have an…

Q: HO OH HO OH HO \OH HO OH čO,H ČOH ČO,H

A:

Q: 2. Compare SANS and SAXS and NMR techniques determining polymer chain structure, which one requires…

A: SANS, SAXS, and NMR are important spectroscopic techniques that are used in the chemical analysis of…

Q: 2.1. The figure that follows represents the structure of Limonene, which is a cycloalkene. CH2 CH3…

A: The IUPAC name of Limonene is  1-methyl-4-(1-methylethenyl)-cyclohexane. Limonene is the major…

Q: Do the following molecule contain conjugated double bonds?

A: A conjugated double bond is defined as that bond which are in conjugation to each other and hence…

Q: Measure the C=C-C bond angles in the energy-minimized models of the cis and trans isomers of…

A: Central carbon atom (sp2 hybridized) of C=C-C has three electron domains. Hence, according to VSEPR…

Q: Pyrethrins, such as jasmolin II(below), are a group of naturalcompounds synthesized by flowers of…

A:

Q: Arrange the following in increasing order of boiling point: (i) CH3CH2CH2CH2Br(ii) (CH3)3Br(iii)…

A: Note: (CH3)3Br considered as (CH3)2CHBr. The boiling point is the temperature at which a liquid…

Q: Which of these orbitals is the HOMO of 1,3,5-hexatriene? y88 8888

A:

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.