Considering the organic compound, classify each of the following transformations, some of which may be unfamiliar, as an oxidation, a reduction, or neither. For those that are oxidations or reductions, tell how many electrons are gained or lost.

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(a) CH4 (b) Ph—CH, (c) CH₂CH₂CH₂I (d) (e) (f) H Br2, light H₂C Ph H Cr6+ H₂O H₂C-CH=C HBr CH3Br LiAlH₁ Ph-C-OH KMnO4 CH3 CH3 CH3CH₂CH3 + I- H Ph H3C-C-C-H LL OH OH Br H₂O₂ CH₂C-OH + O=C Na NH3 CH3 CH3 H H