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Homework answers / question archive / University of Texas, Rio Grande Valley - CHEM 2303 Homework - I (CHEM 2303-02) Summer II 2015 1)In case of covalent non-polar bond the difference in electronegativity between two bonded atoms is______   In case of covalent polar bond the difference in electronegativity between two bonded atoms is ______ If the electronegativity difference between two bonded atoms is higher than _____the bond is called ionic bond

University of Texas, Rio Grande Valley - CHEM 2303 Homework - I (CHEM 2303-02) Summer II 2015 1)In case of covalent non-polar bond the difference in electronegativity between two bonded atoms is______   In case of covalent polar bond the difference in electronegativity between two bonded atoms is ______ If the electronegativity difference between two bonded atoms is higher than _____the bond is called ionic bond

Chemistry

University of Texas, Rio Grande Valley - CHEM 2303

Homework - I (CHEM 2303-02) Summer II 2015

1)In case of covalent non-polar bond the difference in electronegativity between two bonded atoms is______

 

  1. In case of covalent polar bond the difference in electronegativity between two bonded atoms is ______
  2. If the electronegativity difference between two bonded atoms is higher than _____the bond is called ionic bond.
  3. Higher the electronegativity difference between two bonded atoms, more ________is the covalent bond.
  4. Carbon is Sp3 hybridized in methane whereas ______hybridized in ethylene.
  5. Carbon is Sp3 hybridized in ethane whereas______ hybridized in acetylene.
  6. How many σ­bond and π­bond are present in ethylene (C2H4) molecule?
  1. How many σ­bond and π­bond are present in acetylene (C2H2) molecule?
  2. In benzene, the carbons are__ hybridized.
  3. As the number of nearly equivalent resonance contributors increases, the resonance energy_______.
  4. The carbonyl carbon in acetic acid is Sp2 hybridized whereas the carbon in methanol is______.
  5. The carbonyl carbon in acetic acid contains 33.33% s-character whereas the carbon in methanol contains _____s-character.
  6. EDG stabilizes the carbocation making the reaction faster whereas EWG destabilizes the carbocation making the reaction__________.
  7. EDG is an activating group in EAS whereas ______is a deactivating group.
  8. The halogens deactivate the benzene ring in electrophilic ________substitution.
  9. All________ detectors deactivate the benzene ring.
  10. Write the structure of TNT

 

18 The Carbon-Carbon bond distance in ethylene is 1.34 Å whereas Carbon-Carbon bond distance in benzene is_______

  1. Write the name and formula of the catalyst for Fridel-Crafts alkylation and acylation.
  2. What is the major product in the following reaction

 

 

21.The abbreviation NAS stands for_______

22.Meisenheimer Complex is formed addition-elimination .mechanism of ___________

23.Benzyne is formed in _______aromatic substitution reaction.

24.The state of hybridization of the triple bonded carbons in benzyne is ______

25.Phenylation to 1,3-diketo compounds is an example of __________

26.Give an example with figure (in each case) of terminal alkene, internal alkene and cycloalkene.

 

27.Write the structure of zingiberene, (R)- limonene and (S)- limonene.

 

28.In ethylene the carbons are_______ .hybridized.

29.Bromination of cis-2-butene produces a racemic mixture whereas trans-2-butene produces a meso compound — why?

30.Write the chemical structure of DMSO.

31.Write the stability order of 1-butene, cis-2-butene and trans-2-butene.

32.What is Markovnikov’s rule?

33. What is Anti-Markovnikov’s condition? 

34.In the case of hydrohalogenation reaction Syn and _____ addition occur

35.What do you mean by vicinal and germinal dihalides?

36.What do you mean by halohydrin? How does it form?

37.What is NBS? Which purpose it serves in organic synthesis?

 

 

38.Hydroboration-Oxidation is an anti________ addition to alkenes.

39.What is 9-BBN? Mention its use in organic synthesis.

40.Mercurinium ion is formed in _______reaction.

41.Oxymercuration-Demercuration is an_____ hydration procedure.

42.What is degree of unsaturation? Explain the degree of unsaturation considering C6H10 as an example.

43.Hydrogenation is a______ addition.

44.Peroxyacetic acid is used in reaction of alkenes.

45.Write the structures of E-3-methyl-2-pentene and Z-3-methyl-2-pentene.

 

 

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