Alcohols

• How does solubility change as carbon chain length change

  Long chain = less soluble
• What’s meant by the term carbon neutral?

  No net increase in carbon dioxide in the atmosphere
• What are the three processes to make ethanol?


  1– photosynthesis in green plants

  6 CO2+ 6 H2O —> C6H12O6+ 6 O2

  2– fermentation of glucose to form ethanol

  C6H12 —> 2 CH3CH2OH + 2 CO2

  3– complete combustion of all ethanol formed

  2CH2CH2OH + 6 O2 —> 4 CO2 + 6 H2O
• Why does the equations for processes 1,2,3 show that some people claim there is no net emission of carbon-containing greenhouse gases?

  There is six moles of carbon dioxide used in equation one

  
  

  but there is six moles of carbon dioxide made in equation two and three in total
• Why is ethanol produced by these three processes not carbon neutral?

  It takes energy to pump ethanol into a filter, drill, and transport