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Please answer all questions for a positive review! Physical properties of alkenes and alkynes are similar to alkanes, but London Forces are greater. Q4: Why are alkenes "insoluble" in water? Chemical properties of alkenes and alkynes differ from those of alkanes because they have double and triple bonds, the π electrons of which are reactive. The triple and double bonds are functional groups. Q5: Draw the VSEPR orbital picture of Ethyne (acetylene). Ethene is composed of one sigma bond (σ-bond) made by end-on overlap of two C 2sp^(2) hybrid orbitals and one pi bond (π-bond) made by side-ways overlap of two C 2p orbitals. The E,Z Designation of Geometric (cis-trans) Isomers same side of the plane of the C=C bond. CH3 Cl CH3 CH trans-2,3-dichloro-but-2-ene cis-2,3-dichloro-but-2-ene However, in the following stereoisomers, the groups attached to the C=C bond are not identical. Intuitively, we might wish to call the isomer on the left a trans isomer, since the groups in the trans position are similar to each other. CH3 CHCH CHCH2 CH3 (E)-3-chloro-2-fluoropent-2-ene (Z)-3-chloro-2-fluoropent-2-ene O-HOAHO Sometimes deciding which groups are most similar is not so easy. To take the guesswork out of naming such alkenes, IUPAC rules allow specific priorities to be assigned to each group according to the atomic weight of the atoms attached to the C=C bond. Q8: Chlorine has a higher priority than fluorine because it has a higher When the first atoms are the same, it becomes necessary to compare the next atoms of the substituents. Q9: Why is an ethyl group of higher priority than a methyl group? Q10: Prioritize the groups attached to the C=C bonds in the following molecules. CH3 CH3O CHCH3 CH3 CH C=C CH3 CHCHCH2CHCH3 CH2CH2 H CH3 Q11: Why does a -C=N group get higher priority than an -CHNHz group? Q12: Name the following molecules.

Please answer all questions for a positive review! Physical properties of alkenes and alkynes are similar to alkanes, but London Forces are greater.
Q4: Why are alkenes "insoluble" in water?
Chemical properties of alkenes and alkynes differ from those of alkanes because they have double and triple bonds, the π electrons of which are reactive. The triple and double bonds are functional groups.
Q5: Draw the VSEPR orbital picture of Ethyne (acetylene).
Ethene is composed of one sigma bond (σ-bond) made by end-on overlap of two C 2sp^(2) hybrid orbitals and one pi bond (π-bond) made by side-ways overlap of two C 2p orbitals.
The E,Z Designation of Geometric (cis-trans) Isomers
same side of the plane of the C=C bond.
CH3 Cl
CH3 CH
trans-2,3-dichloro-but-2-ene
cis-2,3-dichloro-but-2-ene
However, in the following stereoisomers, the groups attached to the C=C bond are not identical. Intuitively, we might wish to call the isomer on the left a trans isomer, since the groups in the trans position are similar to each other.
CH3
CHCH
CHCH2 CH3
(E)-3-chloro-2-fluoropent-2-ene
(Z)-3-chloro-2-fluoropent-2-ene O-HOAHO
Sometimes deciding which groups are most similar is not so easy. To take the guesswork out of naming such alkenes, IUPAC rules allow specific priorities to be assigned to each group according to the atomic weight of the atoms attached to the C=C bond.
Q8: Chlorine has a higher priority than fluorine because it has a higher
When the first atoms are the same, it becomes necessary to compare the next atoms of the substituents.
Q9: Why is an ethyl group of higher priority than a methyl group?
Q10: Prioritize the groups attached to the C=C bonds in the following molecules. CH3 CH3O CHCH3 CH3 CH C=C CH3 CHCHCH2CHCH3 CH2CH2 H CH3
Q11: Why does a -C=N group get higher priority than an -CHNHz group?
Q12: Name the following molecules.

Added by Marcos U.

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