introduction to organic chemistry part 1

introduction to organic chemistry

part 1

representing organic molecule

structural formula, displayed formula and skeletal formula

• structural formula : how atoms bonded to each carbon atom in the molecule

• displayed formula : show all bonds

• skeletal formula : line diagram - it has all the symbols for carbon and hydrogen removed as well as carbon to hydrogen bond. the carbon to carbon bond are left to place

3D representation

• wedge bond is sticking out of the plane

• dashed line is sticking into the plane of paper

Multiple Choice

what type of formula is the following?

(CH₃)₂CHCH₂COOH

• displayed

• skeletal

• structural

Multiple Choice

what type of formula is the following structure?

• skeletal

• displayed

• structural

Multiple Choice

what type of formula is the following structure?

• 3D diagram

• empirical

• molecular

• skeletal

Multiple Choice

what type of formula is the following structure?

CH₂O

• molecular

• empirical

• neither empirical nor molecular

• either empirical or molecular

Multiple Choice

what type of formula is the following structure?

C₆H₅OH

• molecular

• empirical

• neither empirical nor molecular

• either empirical or molecular

Multiple Choice

what type of formula is the following structure?

C₅H₁₂

• molecular

• empirical

• neither empirical nor molecular

• either empirical or molecular

Multiple Choice

what type of formula is the following structure?

C₆H₆

• molecular

• empirical

• neither empirical nor molecular

• either empirical or molecular

functional group

functional group is

• particular atom or group of atoms the class belongs to

• it determines the special characteristic of chemical properties of the compounds

Multiple Choice

Which is the correct general formula for the alcohol?

• C_nH_2n+2

• C_nH_2n

• C_nH_2n+1OH

• C_nH_2n+1COOH

Multiple Choice

Classify the compound based on the functional group present.

• ether

• ester

• carboxylic acid

• ketone

Multiple Select

What functional group(s) is/are on the molecule (check all that apply)

• Carbonyl

• Hydroxyl

• Carboxylic Acid

• Amine

Multiple Choice

What functional group is shown in the following picture:

• alcohol

• halide

• ether

• alcohol and halide

Multiple Choice

Which functional group is present in this molecule?

• Hydroxyl only

• Hydroxyl and Amino

• Carboxyl and Amino

• Hyroxyl and Carbonyl

Multiple Choice

which one shows carbonyl group

Multiple Choice

which one shows hydroxyl group

Multiple Choice

Classify the compound based on the functional group present.

• alcohol

• ketone

• ester

• ether

Multiple Choice

Classify the compound based on the functional group present.

• aldehyde

• ketone

• carboxylic acid

• ester

Multiple Choice

Classify the compound based on the functional group present.

• amine

• amide

• ether

• ester

Multiple Choice

What kind of molecule is this?

• alkane

• alkene

• alkyne

• cycloalkane

naming organic compounds

naming of organic compound

• IUPAC Rules for Alkane Nomenclature

   1.  Find and name the longest continuous carbon chain, which contain functional group.

   2.  Identify and name groups attached to this chain.

   3.  Number the chain consecutively, starting at the end nearest a substituent group/functional group attached.

   4.  Designate the location of each substituent group by an appropriate number and name.

   5.  Assemble the name, listing groups in alphabetical order using the full name (e.g. cyclopropyl before isobutyl).

  The prefixes di, tri, tetra etc., used to designate several groups of the same kind, are not considered when alphabetizing.

Multiple Choice

Name this compound

• 2,2-dimethyl-4-ethylhexane

• 4-ethyl-2,2-dimethylhexane

• 3-ethyl-5,5-dimethylhexane

• 4-ethyl-2-methylhexane

Multiple Choice

When one adds Br₂ to propene this compound is formed, what is this compounds name?

• 2,3-dibromopropane

• 1,3-dibromopropene

• 1,4-dibromopropane

• 1,2-di-bromopropane

Multiple Choice

Select the IUPAC name for: (CH₃)₂CHCH(OH)CH₂C(CH₃)₃

• 2,5,5-trimethylhexan-3-ol

• 1,1,4,4-pentamethylbutanol

• 1,1-dimethylisopentanol

• 2,5-dimethyl-4-hexanol

Multiple Choice

What is the name of this compound?

• 2,4-chlorohex-3-ene

• 2,4-dichlorohexene

• 2,4-dichlorohex-3-ene

• 2,3,4-trichlorohexane