Lab 25 Model Building Lab.

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Presentation transcript:

Lab 25 Model Building Lab

Draw the structural formula for propane

Hydrocarbon Prefixes: IUPAC: International Union of Pure and Applied Chemistry Hydrocarbon prefixes meth C eth C-C prop C-C-C but C-C-C-C Pent C-C-C-C-C hex C-C-C-C-C-C hept C-C-C-C-C-C-C oct C-C-C-C-C-C-C-C non C-C-C-C-C-C-C-C-C dec C-C-C-C-C-C-C-C-C-C

Now build the molecule with the molecular modeling set. Prop- = 3 Propane H H H H C C C H H H H Now build the molecule with the molecular modeling set.

Eth- = 2 Ethene H H C H C H

Ethene C H C H H H

Ethene H H C C H H

Ethene (Matches the model set)

Isomers Butane (carbon skeleton) 2-methylpropane Isomer: Same molecular formula. Different structural formula. Butane (carbon skeleton) C C C C Shorten chain by 1 carbon and add a branch. C C C C IUPAC name: 2-methylpropane

Isomers Pentane (carbon skeleton) 2-methylbutane 2,2-dimethylpropane Isomer: Same molecular formula. Different structural formula. Pentane (carbon skeleton) C C C C C C Shorten chain by 1 carbon and add a branch. C C C C C C C C C 2-methylbutane 2,2-dimethylpropane

Isomers of Octane Octane C C C C C C C C 2-methyl heptane C C C C C C Methyl group 3-methyl heptane C C C C C C C C 1 2 3 4 5 6 7

Isomers of Octane 4-methyl heptane C C C C C C C C Methyl group 1 2 3 5 6 7 C C C C C C C C Methyl group

Isomers of Octane 2,2-dimethyl hexane C C C C C C C C 3,4-dimethyl 1 2 3 4 5 6 C methyl 3,4-dimethyl hexane methyl C C C C C C C 1 2 3 4 5 6 C methyl

Isomers of Octane 2,4-dimethyl hexane C C C C C C C C 2,5-dimethyl 1 2 3 4 5 6 C methyl 2,5-dimethyl hexane methyl C C C C C C C 1 2 3 4 5 6 C methyl

Isomers of Octane 3,3-dimethyl hexane C C C C C C C C 3,4-dimethyl 1 2 3 4 5 6 C methyl 3,4-dimethyl hexane methyl C C C C C C C 1 2 3 4 5 6 C methyl

Isomers of Octane 3-ethyl hexane C ethyl C C C C C C C 1 2 3 4 5 6

Isomers of Octane 2,2,3-trimethyl pentane C C C C C C C C 1 2 3 4 5 C methyl methyl 2,2,4-trimethyl pentane methyl C C C C C C C 1 2 3 4 5 C methyl

Isomers of Octane 2,3,3-trimethyl pentane C C C C C C C C 1 2 3 4 5 C methyl methyl methyl 2,3,4-trimethyl pentane methyl C C C C C C C C 1 2 3 4 5

Isomers of Octane C 3-ethyl -2-methyl pentane C C C C C C C C 3-ethyl Groups are named alphabetically methyl C C C C C 1 2 3 4 5 C 3-ethyl -3-methyl pentane ethyl C C C C C C 1 2 3 4 5 C methyl

Isomers of Octane 2,2,3,3-tetramethyl butane C C C C C C C C methyl 1 2 3 4 C C methyl methyl