C10.2 structures of alcohols, carboxylic acids and esters

• What is the functional group of carboxylic acids?

  -COOH
• What are the first four members of carboxylic acids?

  Methanoic, ethanoic, propanoic, butanoic
• How is an ester formed from a carboxylic acid?

  By replacing the -COOH group with a hydrocarbon group
• What is the structural formula of ethyl ethanoate?

  CH₃COOCH₂CH₃
• What should be included when drawing displayed formulae for organic compounds?

  • Show all bonds
  • Include bonds in functional groups
  • Represent atoms with their chemical symbols
• What is the displayed formula of methanoic acid?

  HCOOH
• Why are alkenes more reactive than alkanes?

  Due to the presence of a double bond
• What is the structural formula of propanoic acid?

  CH₃CH₂COOH
• What is the structural formula of butanoic acid?

  CH₃CH₂CH₂COOH
• What is the significance of showing all bonds in displayed formulae?

  It accurately represents the molecular structure
• How does the structure of an ester differ from that of a carboxylic acid?

  An ester has a hydrocarbon group replacing -COOH
• What is the displayed formula of ethyl ethanol?

  CH₃CH₂OH