Orbitals Overlapping - Energy - Hydrogenation - Carbon - Science Assessment Answer

Orbitals Overlapping - Energy - Hydrogenation - Carbon - Science Assessment Answer

Assessment Task:

To justify the tetra-valency in acetylene (ethyne), the carbon atom must have 4 atomic orbitals available for bonding. The electronic configuration of carbon in its ground state does not justify why carbon is tetravalent. Show how the ground state valence electron configuration of carbon can form hybrid orbitals that better justify the bonding in ethyne. Your answer must include a labeled drawing of orbitals overlapping to form the bonds of ethyne.

The following diagram shows the enthalpy of hydrogenation data for cyclohexene, cyclohexadiene, a theoretical triene and benzene.
a) Place the correct structures in the boxes on the below energy profile.
b) Explain why even though benzene has an extra bond to break, it has a lower enthalpy of hydrogenation than cyclohexadiene. Include resonance structures as part of your explanation

The following drugs are chiral compounds that can exist as two stereoisomers:
a) For both molecules, identify the carbon that is the stereocentre and assign it as (R) or (S).
b) Discuss the implications this stereocentre has on the biological activity of these compounds.

• Explain which of the two options shown will give the major product in terms of the stability of the intermediates shown.
• State the rule that governs the outcome of such addition reactions.
•  Complete the mechanism to show the resulting major product

Provide a summary of the different redox reactions that involve alcohols by constructing your own “mud map”. Include reagents and be sure to show any selectivity or limitations as appropriate.

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