Hex-1-ene 1.2.5

• What is the product formed when hex-1-ene reacts with concentrated sulfuric acid followed by water?

  Hexan-2-ol
• What are the steps to prepare hexan-2-ol from hex-1-ene?

  1. Prepare an ice bath in a beaker.
  2. Measure 5 cm³ of hex-1-ene in a boiling tube.
  3. Cool the boiling tube in the ice bath.
  4. Measure 5 cm³ of concentrated sulfuric acid.
  5. Slowly add the acid to hex-1-ene while stirring.
  6. Add 10 cm³ of distilled water to separate layers.
  7. Collect the top layer containing hexan-2-ol.
• What is the volume of hex-1-ene used in the preparation of hexan-2-ol?

  5 cm³
• What is the boiling point of hexan-2-ol?

  136 °C
• Why is distillation important in the preparation of hexan-2-ol?

  It separates the desired product from impurities
• What is the chemical formula for hex-1-ene?

  CH₃CH₂CH₂CH₂CH=CH₂
• What is the first step in preparing hexan-2-ol from hex-1-ene?

  React hex-1-ene with concentrated sulfuric acid
• What is the chemical formula for hex-1-ene?

  CH₃CH₂CH₂CH₂CH=CH₂
• What is the overall reaction equation for the hydration of hex-1-ene?

  CH₃CH₂CH₂CH₂CH=CH₂ + H₂O → CH₃CH₂CH₂CH₂CH(OH)CH₃
• What methods can be used to test the product hexan-2-ol?

  Various chemical tests for alcohols
• What is the role of mineral wool in the reaction setup?

  To prevent the escape of vapors
• What is the boiling point of hexan-2-ol?

  136 °C
• What product is formed from the hydration of hex-1-ene?

  Hexan-2-ol
• What is the chemical structure of hexan-2-ol?

  CH₃CH₂CH₂CH₂CH(OH)CH₃
• What are the environmental considerations when using hex-1-ene in reactions?

  Potential hazards and waste management issues
• What is the overall reaction equation for the hydration of hex-1-ene?

  CH₃CH₂CH₂CH₂CH=CH₂ + H₂O → CH₃CH₂CH₂CH₂CH(OH)CH₃
• What are the steps involved in the preparation of hexan-2-ol?

  1. React hex-1-ene with concentrated sulfuric acid.
  2. Add water to the reaction mixture.
  3. Separate and distill hexan-2-ol.
  4. Test the product.
• What is the boiling point of hex-1-ene?

  63 °C
• What are the results of tests for hex-1-ene and hexan-2-ol?

  • Shake with bromine water:
  • Hex-1-ene: Orange to colourless
  • Hexan-2-ol: No change
  • Shake with acidified KMnO₄:
  • Hex-1-ene: Purple to colourless
  • Hexan-2-ol: No change
  • Addition of sodium metal:
  • Hex-1-ene: No reaction
  • Hexan-2-ol: Fizzing seen
  • Combustion:
  • Hex-1-ene: Smokey flame
  • Hexan-2-ol: Less smokey flame
• What are the stages in the mechanism for forming hexan-2-ol?

  1. A secondary carbocation forms when hex-1-ene attacks H in sulfuric acid.
  2. H-O bond undergoes heterolytic cleavage.
  3. Electrons move to oxygen, forming a negatively charged acid.
  4. The acid picks up H, reforming sulfuric acid catalyst.
• Why does hexan-2-ol have a higher boiling point than hex-1-ene?

  Hexan-2-ol has hydrogen bonding.
• What is done after pouring hex-1-ene into the boiling tube?

  Plug the boiling tube with mineral wool
• What happens when distilled water is added to the reaction mixture?

  It separates the mixture into two layers
• How do past papers contribute to exam preparation?

  They provide real exam experience and practice
• What is the last exam year mentioned for Edexcel Chemistry?

  2025
• What is the first exam year mentioned for Edexcel Chemistry?

  2025
• What are the steps to prepare hexan-2-ol from hex-1-ene?

  1. Prepare an ice bath in a beaker.
  2. Measure 5 cm³ of hex-1-ene in a boiling tube.
  3. Cool the boiling tube in the ice bath.
  4. Measure 5 cm³ of concentrated sulfuric acid.
  5. Slowly add acid to hex-1-ene while stirring.
  6. Add 10 cm³ of distilled water to separate layers.
  7. Collect the top layer containing hexan-2-ol.
• What types of past papers are available for GCSE subjects?

  Biology, Chemistry, Physics, and Maths
• What is produced when hex-1-ene reacts with concentrated sulfuric acid followed by water?

  Hexan-2-ol
• What types of resources are available for English Literature?

  Exam questions, revision notes, and past papers
• What is the last exam year mentioned for Cambridge (CIE) Biology?

  2024
• What does it mean for a mixture to be homogenous?

  It means the mixture is uniform throughout
• What are the results of tests for hex-1-ene and hexan-2-ol?

  • Shake with bromine water:
  • Hex-1-ene: Orange to colourless
  • Hexan-2-ol: No change
  • Shake with acidified KMnO₄:
  • Hex-1-ene: Purple to colourless
  • Hexan-2-ol: No change
  • Addition of sodium metal:
  • Hex-1-ene: No reaction
  • Hexan-2-ol: Fizzing seen
  • Combustion:
  • Hex-1-ene: Smokey flame
  • Hexan-2-ol: Less smokey flame
• What types of subjects are included in the GCSE resources?

  Biology, Chemistry, Physics, Maths, and more
• Why is anhydrous sodium carbonate used in the drying process of hexan-2-ol?

  To remove water and neutralize unreacted acid
• What are induced dipole-dipole forces in hex-1-ene?

  Temporary forces between nonpolar molecules
• Why is the boiling tube plugged with mineral wool during the preparation of hexan-2-ol?

  To prevent the escape of vapors
• What is the significance of boiling point in distillation?

  It helps separate components based on volatility