A QCAA Unit 3 and 4 Definitions Set
| Front | Electrorefining |
| Back | Electrorefining is where a piece of impure metal is made the anode of an electrolytic cell, which is oxidised to the cation and then reduced to the pure metal at the cathode. |
| Front | Base-catalysed Transesterification Methods of Producing Biodiesel |
| Back | 1. Methanol reacts with NaOH, which acts as the catalyst. The OH- removes a proton from methanol to form water and H3O-2. The alcohol catalyst mixture is added to the triglyceride at 1 atm and 60-70 degrees celcius. The triglyceride reacts with 3 moles of methanol. The three carbons and their hydrogens from the triglyceride react with OH- and form propane-1,2,3-triol (glycerol). The CH3 group reacts with the free fatty acid to form the fatty acid methy ester that is used as a biodiesel |
| Front | Saturated and Unsaturated Fatty Acid Naming |
| Back | Saturated Fatty Acids: 0 double bondsCnH2nCOOHMono-Unsaturated Fatty Acids: 1 double bondCnH(2n-1)COOHPoly-Unsaturated Fatty Acids: More than 1 double bond |