Which mechanism is incorrect? They all seem correct as the halides are attached to the secondary carbocation in (a) and (c), and the halides are attached to the primary carbocation/end of the organic molecule in (b) and (d). Should the answer be (e)?

"least" under the one which would be least easily oxidized. one acetaldehyde ethanol ) Write "most" under the one which would be most soluble in water. e "least" under the one which would be least soluble in water. formaldehyde butanal cts. " products where relevant. NR". or"

I understand that the diradical dioxygen attacks a hydrogen on the carbon adjacent to the double bond but can I be shown the resonance mechanism and why we can't use a hydrogen directly from the double bond?

Answer both of the following questions precisely, succinctly, and with correct grammar. A. Explain in detail why sodium methoxide (NaOCH,) is more reactive than methanol (HOCH,) in S,2 reactions. Draw two analogous S,2 reactions, one for each reagent, to illustrate your answer. B. In principle, the conversion of an alkyl bromide into the corresponding alkene can be accomplished either by an El or an E2 pathway. Explain in detail why the E2 mechanism usually is preferred.