C) A catalystD) A dehydrating agent16)Which chemical species will be formed when a compound undergoes homolytic bondbreaking?A) AtomsB) CationsC) AnionsD) Free radicals(TURN OVER]CHE1505JANUARY FEBRUARY 202117.Identify a compound that is CORRECTLY matched to the name of the functionalgroups1. CHSCH2OHCarboxylic acidII. CH3CH2CO:CH3EsterIII. CH:COCH:2CH3KetoneIV. H2COAlcoholA) I and IIB) Il and IIIC) III and IVD) Il and IV18)Which one of the following molecules has primary, secondary and quaternary carbonatoms?A) HexaneB) 2,2-dimethylhexaneC) 2,2,3-trimethylhexaneD) 3-methylhexane19)Consider the constitutional isomers, which statement is CORRECT?A) Constitutional isomers are different molecules having different molecular formulasB) They have different molecular structures with the same molecular formulaC) They are molecules having the same structures but different molecular formulasD) Constitutional isomers are same molecules having the same molecular formula(TURN OVER]CHE1505JANUARY FEBRUARY 2021Which of the following structures is the CORRECT resonance structure of the followingmolecule:20) CH CH,CHE1S0SJANUARY FEBRUARY 202120)Which of the following structures is the CORRECT resonance structure of the followingmolecule::o:CH5(A)CH, CH,CH3-(B)Co-H(C)HO CH,CH3(D)CH,CH-CH,21)Which statement about the CH2=CH2 molecule is CORRECT?A)The size of the H-C-H bond angle is 130°B)the molecule has a tetrahedral structureC) The pi (T) bond is formed by the overlap of ONE p-atomic orbital of carbon withONE p-atomic orbital of carbonD) The carbon atom is sp hybridized22) When a hydrocarbon burns in air, what component of air reacts?A) Carbon dioxideв) ОхудenC) NitrogenD) Water(TURN OVER]CHE1S05JANUARY FEBRUARY 202123.What is the CORRECT IUPAC name for the structure below?A) 3-methyl-4-ethylhepteneB) 4-ethyl-3-methylhept-3-eneC) 4-ethyl-5-methylhept-4-eneD) 2,3-diethylhex-2-ene24.What is the condensed formula of the compound below?OHонBrBrA) CH,CH2(OH)CH(CHs)CH2CH2(CH3)CHBr2B) CH;CH(OH)CH(CH3)CH;CH(CHa)CHBr2C) CHa(OH)CH(CH:)CHCH2(CH:)CHBR2CHD) CH:CH:CHCH:)CH:(CHa)CH:CHBR2

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16) Which chemical species will be formed when a compound undergoes homolytic bond breaking? A) Atoms B) Cations C) Anions D) Free radicals

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter1: Covalent Bonding And Shapes Of Molecules

Section: Chapter Questions

Problem 1.75AP: (a) Draw a Lewis structure for the ozone molecule, O3. (The order of atom attachment is OOO, and...

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Formamide, HC(O)NH2, is prepared at high pressures from carbon monoxide and ammonia, and serves as an industrial solvent (the parentheses around the O indicate that it is bonded only to the carbon atom and that the carbon atom is also bonded to the H and the N atoms). Two resonance forms (one with formal charges) can be written for formamide. Write both resonance structures, and predict the bond angles about the carbon and nitrogen atoms for each resonance form. Are they the same? Describe how the experimental determination of the HNH bond angle could be used to indicate which resonance form is more important.
Following are the structures of three isomers of difluorobenzene, C6H4F2. Are any of them nonpolar?
(a) Draw a Lewis structure for the ozone molecule, O3. (The order of atom attachment is OOO, and they do not form a ring.) Chemists use ozone to cleave carbon-carbon double bonds (Section 6.5C). (b) Draw four contributing resonance structures; include formal charges. (c) How does the resonance model account for the fact that the length of each OO bond in ozone (128 pm) is shorter than the OO single bond in hydrogen peroxide (HOOH, 147 pm) but longer than the OO double bond in the oxygen molecule (123 pm)?
Identify the set of covalent bonds that shows the correct trend of increasing bond polarity. (A) H―F < H―Cl < H―Br < H―I; (B) H―C < H―N < H―O < H―F; (C) H―O < H―S < H―Se < H―Te; (D) H―C < H―Si < H―Ge < H―Sn;
Propylene, C3H6, is a gas that is used to form the importantpolymer called polypropylene. Its Lewis structure is given. (a) What is the total number of valence electrons in the propylenemolecule? (b) How many valence electrons are usedto make σ bonds in the molecule? (c) How many valenceelectrons are used to make π bonds in the molecule? (d) Howmany valence electrons remain in nonbonding pairs in themolecule? (e) What is the hybridization at each carbon atomin the molecule?
The structural formulas for ethanol, CH3CH2OH, and propene, CH;CH=CH,2, are нн H Н—С—С—0—н H-C-C=C-H нн H H H Ethanol Propene (a) Complete the Lewis structure for each molecule showing all valence electrons. (b) Using the VSEPR model, predict all bond angles in each molecule.
Which of the following bonds are polar? C-O, Cl-Cl, O=O, N-H, C-H.(Electronegativites: C = 2.5, H = 2.1, Cl = 3.0, O = 3.5, N = 3.0). In the selected bonds indicatewhich direction the electron density is greatest.
Propylene, C3H6, is a gas that is used to form the importantpolymer called polypropylene. Its Lewis structure is (a) What is the total number of valence electrons in the propylenemolecule? (b) How many valence electrons are usedto make s bonds in the molecule? (c) How many valenceelectrons are used to make p bonds in the molecule? (d) Howmany valence electrons remain in nonbonding pairs in themolecule? (e) What is the hybridization at each carbon atomin the molecule?
Methyl isocyanate, CH3NCO, was made infamous in 1984when an accidental leakage of this compound from a storagetank in Bhopal, India, resulted in the deaths of about3800 people and severe and lasting injury to many thousandsmore. (a) Draw a Lewis structure for methyl isocyanate.(b) Draw a ball-and-stick model of the structure,including estimates of all the bond angles in the compound.(c) Predict all the bond distances in the molecule.(d) Do you predict that the molecule will have a dipolemoment? Explain.
Identify the set that shows the correct trend in increasing polarity of covalent bonds: (A) B―F < C―F < C―Cl < N―Cl (B) C―F < C―Cl < N―Cl < B―F; (C) N―Cl < C―Cl < C―F < B―F; (D) C―Cl < N―Cl < B―F < C―F;
Two important industrial chemicals, ethene, C2H4, and propene, C3H6, are produced by the steam (or thermal) cracking process: 2C3H8(g) ⟶ C2H4(g) + C3H6(g) + CH4(g) + H2(g) For each of the four carbon compounds, do the following: (a) Draw a Lewis structure. (b) Predict the geometry about the carbon atom. (c) Determine the hybridization of each type of carbon atom.
Two important industrial chemicals, ethene, C2H4, and propene, C3H6, are produced by the steam (or thermal) cracking process:2C3 H8(g) ⟶ C2 H4(g) + C3 H6(g) + CH4(g) + H2(g)For each of the four carbon compounds, do the following:(a) Draw a Lewis structure.(b) Predict the geometry about the carbon atom.(c) Determine the hybridization of each type of carbon atom.