Worksheet: Alkanes

In this worksheet, we will practice writing and interpreting the names and formulas of alkanes and describing trends in properties such as melting points.

Q1:

What is the molecular formula of an alkane with 7 carbon atoms?

  • A C H 7 1 4
  • B C H 7 7
  • C C H 7 1 0
  • D C H 7 1 6
  • E C H 7 2 1

Q2:

What is the general formula for an alkane?

  • A C H 𝑛 𝑛
  • B C H 𝑛 𝑛 2
  • C C H 𝑛 2
  • D C H 𝑛 𝑛 2 + 2
  • E C H 𝑛 4 𝑛 + 4

Q3:

What is the chemical formula for an alkane with 3 carbon atoms?

  • A C H 3 9
  • B C H 3 6
  • C C H 3 3
  • D C H 3 8
  • E C H 3 4

Q4:

What is the name of the alkane with the chemical formula C H 4 1 0 ?

  • A Hexane
  • B Propene
  • C Pentane
  • DButane
  • E Ethyne

Q5:

What is the name of the alkane with the chemical formula C H 4 ?

  • AMethanol
  • BMethyne
  • CMethene
  • DMethane
  • EEthane

Q6:

What is the name of the alkane with the chemical formula C H 3 8 ?

  • A Ethane
  • B Methane
  • C Butane
  • D Propane
  • E Ethyne

Q7:

What is the molecular formula for an alkane with 6 carbon atoms?

  • A C H 6 1 2
  • B C H 6 6
  • C C H 6 1 6
  • D C H 6 1 4
  • E C H 6 1 8

Q8:

Which of the following is not a property of all alkanes?

  • ALess dense than water
  • BHydrocarbon
  • CImmiscible with water
  • DGas at room temperature
  • ESaturated

Q9:

A Wittig reagent has the shown structural formula.

Ph 3 P + C H C H 2 C H 3
This reagent reacts with a carbonyl compound with the formula C H O 1 0 1 2 to produce 4-phenyl-3-heptene. What is the name of the carbonyl compound?

  • A2-Phenyl-2-butanone
  • B1-Phenyl-2-butanone
  • C4-Phenyl-1-butanone
  • D1-Phenyl-1-butanone
  • E3-Phenyl-2-butanone

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