Đáp án:

(a) $CH_3[CH_2]_4CHO+Br_2+H_2O\to CH_3[CH_2]_4COOH$ (hexanoic acid) $+2HBr$ 

(b) $CH_3[CH_2]_6CHO\xrightarrow{{[H]}} CH_3[CH_2]_6CH_2OH$ (octan-1-ol)

(c) $C_2H_5COOH+CH_3OH\buildrel{{H_2SO_4 đ, t^o}}\over\rightleftharpoons C_2H_5COOCH_3$ (methyl propionate) $+H_2O$ 

(d) $CH_3CH_2COCH_2CH_2CH_3\xrightarrow{{[H]}} CH_3CH_2CH(OH)CH_2CH_3$ (hexan-3-ol)

(e) $CH_3-CH(OH)-CH_3+CH_3-CH_2-CH(CH_3)-CH_2-COOH \buildrel{{H_2SO_4 đ, t^o}}\over\rightleftharpoons CH_3-CH_2-CH(CH_3)-CH_2-COO-CH(CH_3)-CH_3$ (isopropyl 3-methylpentanoate) $+H_2O$ 

(g) $CH_3CH_2CH(CH_3)CHO\xrightarrow{{[H]}} CH_3CH_2CH(CH_3)CH_2OH$ (2-methylbutan-1-ol)

(h) $CH_2OH-CH(CH_3)-CH(CH_3)-CH_3 + CuO \xrightarrow{{t^o}} CH_3-CH(CH_3)-CH(CH_3)-CHO$ (2,3-dimethylbutanal) $+Cu+H_2O$