Compound: CH3CH2OH (Ethanol)

Compound: CH3CH2OH (Ethanol) Lewis Structure 3-D Structure Skeletal Structure Functional Group(s) Present: Central Atom(s) Geometry: Polar or Non-Polar 5. Compound: CH3COOH (Ethanoic Acid) Lewis Structure 3-D Structure Skeletal Structure Functional Group(s) Present Central Atom(s) Geometry: Polar or Non-Polar 6. Compound: C2H2Cl2 Lewis Structure A Find all 3 Isomers Lewis Structure B Lewis Structure C Skeletal Structure A Skeletal Structure B Skeletal Structure C Functional Group(s) Present Functional Group(s) Present Functional Group(s) Present Central Atom(s) Geometry: Central Atom(s) Geometry: Central Atom(s) Geometry: Polar or Nonpolar (Circle one Polar or Nonpolar Circle one) Polar or Nonpolar (Circle one)

• Drawing Organic Compounds,

The Correct Answer and Explanation is :

1. Ethanol (CH3CH2OH)

Lewis Structure:

• Ethanol consists of two carbon atoms, five hydrogen atoms, and one hydroxyl group (-OH).
• The central structure can be drawn with each carbon bonded to hydrogen atoms, and the oxygen is bonded to hydrogen, completing the structure.

H   H
|   |
H-C-C-O-H
|   |
H   H

3-D Structure:

• In 3D, ethanol adopts a tetrahedral geometry around both carbon atoms and the oxygen atom. The molecule is flexible, with the ethanol’s polar hydroxyl group (-OH) capable of forming hydrogen bonds.

Skeletal Structure:

• The skeletal structure omits the hydrogens attached to carbon atoms. Only bonds between carbon and oxygen atoms are drawn.

CH3-CH2-OH

Functional Group(s) Present:

• Hydroxyl group (-OH).

Central Atom(s):

• The central atoms are carbon and oxygen.

Geometry:

• The geometry around the carbon atoms is tetrahedral.
• The geometry around oxygen is bent due to lone pairs on oxygen.

Polar or Non-Polar:

• Ethanol is polar because the oxygen atom in the hydroxyl group makes the molecule have a partial positive and partial negative charge, creating an overall dipole moment.

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2. Ethanoic Acid (CH3COOH)

Lewis Structure:

• Ethanoic acid consists of a carboxyl group (-COOH) attached to a methyl group (-CH3).

H   O
|   ||
H-C-C-O-H
|   |
H   H

3-D Structure:

• The molecule adopts a tetrahedral geometry around the two carbon atoms.
• The oxygen atoms in the carboxyl group are connected through a double bond (C=O) and a single bond (C-O).

Skeletal Structure:

• The skeletal structure can be simplified to:

CH3-COOH

Functional Group(s) Present:

• Carboxyl group (-COOH).

Central Atom(s):

• The central atoms are carbon and oxygen.

Geometry:

• The geometry around the carbon in the carboxyl group is trigonal planar (due to the double bond).
• The geometry around the methyl group is tetrahedral.

Polar or Non-Polar:

• Ethanoic acid is polar due to the presence of the carboxyl group, which has a strong dipole.

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3. Dichloroethene (C2H2Cl2)

There are three isomers for dichloroethene, based on the positions of the chlorine atoms.

Isomer A: 1,1-Dichloroethene

Lewis Structure:

H-C=C-Cl
   |   
   Cl

Skeletal Structure:

Cl-C=C-Cl

Functional Group(s) Present:

• None specifically.

Central Atom(s):

• Carbon atoms.

Geometry:

• The carbon-carbon double bond results in a planar geometry.

Polar or Non-Polar:

• Polar due to the asymmetric distribution of chlorine atoms.

Isomer B: 1,2-Dichloroethene (Cis form)

Lewis Structure:

H-C=C-Cl
   |   
   Cl

Skeletal Structure:

H-C=C-Cl
    |   
    Cl

Functional Group(s) Present:

• None specifically.

Central Atom(s):

• Carbon atoms.

Geometry:

• The carbon-carbon double bond gives it a planar geometry.

Polar or Non-Polar:

• Polar due to the cis configuration of the chlorine atoms, which introduces an uneven charge distribution.

Isomer C: 1,2-Dichloroethene (Trans form)

Lewis Structure:

H-C=C-Cl
   |   
   Cl

Skeletal Structure:

H-C=C-Cl
    |   
    Cl

Functional Group(s) Present:

• None specifically.

Central Atom(s):

• Carbon atoms.

Geometry:

• Similar to the cis form, with a planar structure.

Polar or Non-Polar:

• Non-polar as the chlorine atoms are opposite to each other, canceling out the dipoles.

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Summary:

• Ethanol (CH3CH2OH) is polar, with a hydroxyl group (-OH).
• Ethanoic Acid (CH3COOH) is polar due to its carboxyl group (-COOH).
• Dichloroethene (C2H2Cl2) has isomers, where the trans form is non-polar, and the cis form is polar.