11-3 (a) A 10 alcohol loses two hydrogens when transformed to the aLdehyde, and a 2± aLcohol one hydrogen in foNIng a ketone; each aLcohol is oxidized. DMSO an oxygen FRo± the sulFur; it is clear²Y reduced³ (´f you got those twoµ you did the problem correctly¶) To be ·gorous, oxaLyL chLo·de underG¸es a disproportionation reaction: one C is oxidized to CO2 and the other C reduced to CO¹ however, the net effect on the elements in oxalyl chloride "no ºHan»E"³ (b) Text section 8²15B shows that dimethyl sUlfi¼½ re¼Uces an ozonide. ¾n tHe process, dimethyl sulf¿À½ oxi¼¿ze¼ to ÁÂSÃ. 11³4 (a) ÁehydroGenation does not occur at 250 C-e¿tHEr: 1) there a high kÄnetic baÅer (a high activation energy) for th¿s reaºt¿on, or 2) it theÆmo¼ynamIºallÇ unfaVorabÈe, with [É > O. The Latter possibilitÇ ¿s sUppoÊte¼ bÇ tH½ faºt tHat the reVerse reaºt¿on ËcataÈÇtiº Hy¼roGenation of a carbonyL) is spontaneous at 250 C (see teXt sect¿on 1´µ¶ 1 C) and therefore has [Ì < Í³ This maKes the
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