Chemistry Lab

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CHM101LM7BiofuelLabReport.docx

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Synthesis of Biodiesel Student Name Date

Data

From Lab 2-1: Introduction to Molecules – Activity 5

Basic Hydrocarbons: Observation Questions

1. Does the ball-and-stick model look like the expanded structural formula?

2. What similarities are there between the ball-and-stick models of methane and propane and their respective molecular and expanded structural formulas?

3. What differences are there between the ball-and-stick model of methane and propane and their respective molecular and expanded structural formulas?

4. List the information that the ball-and-stick model provides that the structural formula does not.

Data Table 3

Straight-Chained Hydrocarbons

Class	Type of Bonding	General Formula
Alkanes
Alkenes
Alkynes

Example	Structural Formula	3-dimensional geometry	Shape	Rotation of Bonds	Bond Strength
Ethane C2H6	$K:\CPMI\Distance Learning Team\Lab Kit Manuals\Chemistry\580306 Bonding and Molecular Geometry\history\Images - Owned by Carolina\ethane.jpg$
Ethene C2H4	$K:\CPMI\Distance Learning Team\Lab Kit Manuals\Chemistry\580306 Bonding and Molecular Geometry\history\Images - Owned by Carolina\Ethene.jpg$
Ethyne C2H1	$K:\CPMI\Distance Learning Team\Lab Kit Manuals\Chemistry\580306 Bonding and Molecular Geometry\history\Images - Owned by Carolina\Ethyne.jpg$

Alkanes: Compare Similarities and Differences between the Structural Isomers of C4H10

n-butane	isobutene

Alkenes: Isomers of C4H8

	Molecule 1	Molecule 2	Molecule 3
Structural Formula			$C:\Users\msteadman\Pictures\1butene.png$
Condensed Structural Formula
Skeletal Model

Can Molecule 1 be made to look exactly like Molecule 2? Why or why not?

Describe the differences in structures between the three alkenes.

Are Molecules 1, 2 and 3 chemically identical?

Alkynes

Isomers of C4H6

Observations

Cyclic and Acyclic Compounds

Cyclohexane

Hexane

Skeletal Model

Which arrangement is more stable, cyclohexane or hexane? Why?

Aromatic Compounds

Skeletal Models of Benzene

Are these benzene molecules isomers, or are they the same molecule? Explain.

Skeletal Models of Dichlorobenzene

Are these dichlorobenzene molecules isomers, or are they the same molecule? Explain.

From Lab 7-1: Synthesis of Biofuel

Activity 2

Data Table 1

Mass of Graduated Cylinder	Volume of Biodiesel	Mass of G.C. + Biodiesel	Mass of Biodiesel	Density of Biodiesel	pH of Biodiesel	Presence of Intermediates? (y/n)

What important step does calcium methoxide facilitate? Is the calcium methoxide used up in the synthesis?

Based on your results, was there a complete synthesis of biodiesel in your reaction?

$K:\CPMI\Distance Learning Team\DL team Images\Distance Learning Logo.jpg$

	Cyclohexane	Hexane
Skeletal Model