My life

Organic chemistry studies carbon compounds, but a few carbon compounds such as carbon monoxide, carbon dioxide, metal carbonates, and carbon disulphide traditionally come under the umbrella of inorganic chemistry.

INTRODUCTORY

1. Give the following for the compound propane C3H8:

(a) Full structural formula
(b) Skeletal formula

2. Draw all the possible isomers of hexane C6H14 and give the name of each.

3. Draw the structural formulae for each of the following alkanes:
(a) 2,2- dimethylbutane
(b) 2-methyl-4-ethylhexane

4. A student gave the name of a hydrocarbon as 2-methyl-2-ethylbutane. Give the correct name. 5. (a) Draw the structural formula of the most highly branched isomer of octane

(b) Suggest why this isomer combusts more smoothly than the straight-chain isomer.

(c) Which of these two isomers has the higher boiling point? Give reasons why this isomer gives rise to the higher value.

6. C4H8 can exist in four isomeric forms. Draw all the structural formula of the isomers and give their names.

7. A CH3CH2CO2H B CH3CH(OH)CH2CH3 C CH3CO2CH3 D CH3CH2COCH2CH3 E CH3CH2CONH2 F H2NCH2CH2CH3
G C6H5CHO A list of seven organic compounds is given above.
(a) Which compound is
(i) an ester;
(ii) an aldehyde;

(iii) an alcohol;
(iv) an amide
(v) an aromatic compound
(vi) an acid?

(b) Which two compounds are structural isomers?

(c) Which compound has chiral center? Mark its chiral center on the structure with an asterisk.

8. Give the IUPAC names for the following compounds:

(b) ClCH2CH2CH2CH(OH)CH3

(c) CH3CH2CH=CBrCH2CH3

would attract electrophile or nucleophile? Give examples of (i) nucleophiles and (ii) electrophiles.

10. Classify the reactions below:

(a) CH3CH2CH=CHCH3 + Br2  CH3CH2CHBrCHBrCH3

(b) CH3CH(OH)CH3 + KOH(alc.)  CH3CH=CH2 + KBr + H2O

(c) CH3CH2CH2OH + KMnO4  CH3CH2COOH

(d) CH3CH2CHBrCH3 + NaOH(aq)  CH3CH2CH(OH)CH3 + NaBr(aq)