Alkanes, Alkenes & Alkynes

What is the general formula of the alkynes?

• C_nH_2n+1
• C_nH_2n+2
• C_nH_2n-1
• C_nH_2n-2

Which of the following could contain a triple bond?

• C₄H₁₀
• C₄H₈
• C₄H₆
• C₄H₁₂

General formula of Alkene is 

• C_nH_2n+2
• C_nH_2n
• C_nH_2n+1OH
• C_nH_2n+1COOH

Alkyl groups have naming priority over Alkene/Alkyne functional groups

• True

• False

Answer explanation

True! Alkyl groups are named first according to IUPAC rules in alphabetical order

Alkyl groups have carbon numbering priority over alkenes/alkynes

• True

• False

Answer explanation

Alkyl groups (methyl/ethyl) have NAMING priority based on alphabetical order!

Which of the structures represents 2,2,4-trimethylpentane

• 
• 
• 
• 

What is the structure of 2-methyl pent-2-ene ?

• a

• b

• c

• d

Name the following structure using the IUPAC nomenclature.

• 1,2-dimethyl-1,5-hexadiene

• 1,5-dimethyl-1,5-hexadiene

• 3-methyl-2,5-heptadiene

• 5-methyl-2,5-heptadiene

Answer explanation

When naming this molecule we name right to left on the carbon chain to get that methyl alkyl group on the lowest possible carbon

Name the following structure using the IUPAC nomenclature.

• nonene
• 2,2-dimethyl-3-heptene
• 1,1,5-trimethyl-2-hexene
• 2,6-dimethyl-3-heptene

What is the correct name for the alkyne shown?

• butyne

• 1-butyne

• 2-butyne

• 1-methyl-1-propyne