Hydrocarbons

Which formula represents a hydrocarbon?

• C₂H₆

• C₂H₅OH

• C₂H₅Cl

• C₂H₆O

What is the chemical name for the compound CH₃CH₂CH₂CH₃?

• butane

• butene

• decane

• decene

Which formula represents an alkane?

• C₂H₂

• C₂H₄

• C₃H₄

• C₃H₈

Which compound is a member of the same homologous series as C₃H₈?

• CH₄

• C₄H₈

• C₅H₈

• C₅H₁₀

Hydrocarbons are compounds that contain

• arbon, only

• carbon and hydrogen, only

• carbon, hydrogen, and oxygen, only

• carbon, hydrogen, oxygen, and nitrogen, only

A molecule of a compound contains a total of 10 hydrogen atoms and has the general formula C_nH_2n+2.

Which prefix is used in the name of this compound?

• pent-

• dec-

• oct-

• but-

Which structural formula correctly represents a hydrocarbon molecule?

• 
• 
• 
• 

Cracking hydrocarbon molecules will result in

• larger molecules with lower boiling points

• larger molecules with higher boiling points

• smaller molecules with lower boiling

• smaller molecules with higher boiling points

Which equation represents a cracking reaction?

• C₂₂H₄₄ + HBr → C₂₂H₄₅Br

• C₂₂H₄₆ → C₈H₁₈ + C₁₄H₂₈

• C₅H₁₀ + Br₂ → C₅H₁₀Br₂

• C₅H₁₂ + 8 O₂ → 5 CO₂ + 6 H₂O

Given the diagram of a laboratory apparatus:

This apparatus is used for which process?

• filtration

• distillation

• chromatography

• electrolysis