dehydration/elimination

• dehydration makes alkene + water
• removing OH off one carbon and H off the carbon atom
• condition: heat under reflux + conc. H3PO4/H2SO4
• with secondary alcohols:

  • could have different types of product
  • but no major/minor products because of how vigorous the reaction is
• same no. = substitution reaction

  more reactant = addition reaction

  less reactant = elimination reaction
• elimination / dehydration: butanol + conc. H2SO4 -> butene