chemsample-caspie-results

__ //Student A + B// __ __
 * Caspie Procedure Results ~** __
 * Reagent || Molarity ||
 * Waste oil || 900g/mol ||
 * catalyst || 341g/mol ||

** //Waste Oil Product: 10% catalyst// ** calculation: 5.0 g waste oil x 1 mol / 900 g = 0.006 mol waste oil 0.006 mol waste oil x 0.10 = 0.0006 mol catalyst

 0.0006mol catalyst x 341g/mol = .2046 g catalyst used

//pH of first seperation: 6-7// pH of second seperation: 7*

//*Waste Oil Product: 30% catalyst //
 * Amount of catalyst used: 0.502g

original mass: 7.430 g mass of product: 6.413 g

percent yield: 6.413/7.430 x 100 = 86.3 %

// pH of first seperation: 5-6 // pH of second seperation: 6-7 pH of third seperation: 7 *******

NMR of Biodiesel (30%) [|lizjuliabiodiesel1nmr[1.bmp]]

Possibilities: Note: these could be derivatives from the glycerol and or fatty acids that were present in the original product.
 * RCOO-C H || esters || 3.7-4.1 ||
 * H C-COOR || esters || 2-2.2 ||
 * HC-C=O || carbonyl compounds || 2-2.7 ||
 * H C-OH || alcohols || 3.4-4 ||
 * H C-OR || ethers || 3.3-4 ||

IR of Biodiesel(30%) [|lwjvbiodiesel1ir[1.bmp]]

__ //Student C + D// __

Waste Oil product #1 (45% catalyst)* This was originally suppose to be 15% catalyst but we had the wrong molar mass for the waste oil when we calculated the mol percent.

5.0 grams w.o. x 1 mol / 900 g w.o. x 0.45 x 341g/1 mol catalyst = 0.8525 g catalyst

during separation: pH of first aqueous layer: 5 pH of second aqueous layer: 7

original mass: 7.3447 g mass of product: 6.484 g

6.484 g/ 7.3447 g x 100 = 88.3% yield of product

IR [|IR_Sera.TIF]

NMR [|sera_w.o._1.bmp]

Waste Oil pro​duct #2 (15% catalyst)

IR [|arsvbiodiesel2.bmp] NMR __ //Student E// __

Waste Oil Product #3 (60 % Catalyst)* Again, this was originally supposed to be 20 % catalyst, however, we had the wrong molar mass for the waste oil when we calculated the mol percent

5.0 grams w.o. x 1.0 mol / 900 g w.o. x 0.60 x 341g / 1.0 mol catalyst = 1.1253 g

__During separation:__ pH of first extraction: 1 - 2 pH of second extraction: 2 - 3 pH of third extraction: ~ 5 pH of fourth extraction: 5 - 6 pH of fifth extraction: 6 - 7 pH of sixth extraction: ~ 7*


 * Note** - That I ran multiple extractions due to a maleable bonded layer that I was having trouble getting rid of. However, after the multiple extractions, I was successfully able to produce a neuttral usable product.

__Original mass__: 7.644 g __Mass of product__: 5.977 g

5.977 g / 7.644 g ( x 100 ) = 78.19 % product yield

//IR Spectra of Biodiesel Product ~// [|IR_Spec_Biodiesel.JPG]

//NMR Spectra of Biodiesel Product ~// [|NMR_Spec_Biodiesel.JPG] (see below)

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