C-11-Q065mediumsingle_mcqCH3CHO+[O]→K2Cr2O7+H2SO4?\mathrm{CH_3CHO + [O] \xrightarrow{K_2Cr_2O_7 + H_2SO_4} ?}CH3CHO+[O]K2Cr2OaCH3COOH\mathrm{CH_3COOH}CH3COOHbC2H5OH\mathrm{C_2H_5OH}C