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Which of the indicated carbon atoms have sp2 hybridization state in the following compound?

Which of the following structures have a 1— formal charge on the nitrogen atom?

What is the direction of equilibrium when acetylene (C2H2) reacts with ethoxide (CH3CH2O-) in an acid-base reaction?  

Consider the shown proton on each compound and identify which is most acidic.

Determine the formal charge on each atom as indicated for the structure below.

The lone pairs of electrons on the nitrogen atom in the following compound are located in which orbital?

What is the hybridization state and approximate bond angle around nitrogen in the following compound?

Bonus question Caffeine has the following structure. Identify the hybridization state and molecular geometry at the indicated atoms.

The C—C sigma bond in ethyne (H—C≡C—H) results from the overlap of which orbitals?

Delocalization of electrons over two or more atoms ________ a molecule.