CHEM 1AA3 Lecture Notes - Lecture 3: Aromaticity, Rice Chart, Benzene
2 Jan 2018
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Mcmaster students offering support (cid:1) oxygen has two lone pairs of electrons only one pair participates in conjugation, but the other pair is also orthogonal to the ring. Yes 6 (this illustrates that the lone pairs do not count, because we are seeing a bonding interaction) Yes 6 (4 from double bonds, 2 from oxygen) Yes 6 (count lone pairs as two electrons!) No (aromaticity is only defined for cyclic segments only) Yes (this is just another highly improbable resonance form of benzene nonetheless it is still aromatic. Nitrogen do not count, they are not part of the ring!!) Cl + h3o+; this is a strong acid, so the equilibrium is favoured to the right (extremely) Cn + h3o+; this is a weak acid; equilibrium is favoured to the left. + + ch3coo ; no side of the equilibrium is actually favoured because the extents of: ph = 5. 0 implies [h+] = 10-5. 0 m:
