Chemistry 104 Laboratory

 

 

This Week

Answer Keys

Gen Chem Lab

Periodic Table

 

 

 

á       Expt 4:  Green Chemistry, Biodiesel (Parts A, B)

o      Preliminary Assignment Due

 

Next Time

á       Expt 4:  Green Chemistry, Biodiesel (Parts C,D)

 

Notes for Today

 

  • What Is Biodiesel?
    • A Petroleum Diesel Substitute    

          

 

    • A ÔGreenÕ Fuel

         

 

      • Produced from renewable vegetable oil feedstocks

Greener still:  Waste oil can be used for synthesis

      • Synthesis involves minimal hazardous waste
      • Combustion results in lower emissions (vs. petrodiesel)

   

 

    

 

  • Biodiesel Synthesis
    • Reaction Is A Transesterification

    • Easy To Do On Small Or Large Scale

                      

 

    • Your Problem To Solve
      •  What are optimum synthesis conditions?

 

 

 

  • Safety
    • Wear goggles at all times
    • Avoid skin contact with methanol and NaOH
    • Methanol, oil, and biodiesel are flammable

 

 

  • Report = Purpose, Procedure, Week 1 Data, Week 1 Worksheet
    • Recall PV = nRT
      • P= gas pressure in atmospheres
      • V = gas volume in liters
      • n = moles of gas
      • R = 0.0821 L-atm/mol-K
      • T = gas temperature in Kelvin