(i) `underset("Ethanoic acid")(CH_(3)COOH)overset(SOCl_(2))tounderset("Ethanoyal chloride")(CH_(3)COCl)`
`underset(("excess"))overset(NH_(3))tounderset("Ethanaminde")(CH_(3)CONH_(2))underset(("Hofmann bromamide reaction"))overset(Br_(2)//KOH)tounderset("Methanamine")(CH_(3)NH_(2))`
(ii) `underset("Hexanenitrile")(CH_(3)(CH_(2))_(4)CH)overset(H_(2)"O"//H^(+))tounderset("Hexanoic acid")(CH_(3)(CH_(2))_(4)COON)`
`overset(NH_(3))tounderset("Ammonium hexanoate")(CH_(3)(CH_(2))_(4)COONH_(4))overset(Delta)toCH_(3)underset("Hexanamide")((CH_(2))_(4)CONH_(2))`
`underset(Delta)overset(Br_(2)//KOH)tounderset(1-"aminopentane")(CH_(3)(CH_(2))_(4)NH_(2))`
(iii) `underset("Methanol")(CH_(3)OH)overset(PCl_(5))tounderset("Chloro methane")(CH_(3)Cl)`
`overset(KCN(alc.))tounderset("Ethanenitrile")(CH_(3)CN)overset(H_(2)"O"//H^(+))tounderset("Ethanoic acid")(CH_(3)COOH)`
(iv) `underset("Ethanamine")(CH_(3)CH_(2)NH_(2))overset(HNO_(2))tounderset("Ethanol")(CH_(3)CH_(2)OH)`
`overset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))tounderset("Ethanal")(CH_(3)CHO)overset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))tounderset("Ethanoic acid")(CH_(3)COOH)`
`overset(NH_(3))tounderset("Ammonium ethanoate")(CH_(3)COONH_(4))overset(Delta)tounderset("Ethanamide")(CH_(3)CONH_(2))`
`underset(Delta)overset(Br_(2)KOH)tounderset("Methanamine")(CH_(3)NH_(2))`
(v) `underset("Ethanoic acid")(CH_(3)COOH)overset(LiAH_(4))tounderset("Ethanol")(CH_(3)CH_(2)OH)`
`overset(P+I_(2))tounderset("Iodoethane")(CH_(3)CH_(2)I)overset(KCN)tounderset("Propanenitrile")(CH_(3)CH_(2)CN)`
`overset(H_(2)"O"//H^(+))tounderset("Propanoic acid")(CH_(3)CH_(2)COOH)`
(vi) `underset("Methanamine")(CH_(3)NH_(2))overset(HNO_(2))tounderset("Methanol")(CH_(3)OH)overset(P+I_(2))tounderset("Iodomethane")(CH_(3)I)`
`underset(("Carbylamine reaction"))overset(CHCl_(3)//KOH, Delta)tounderset("Methylisocyanide")(CH_(3)NC)underset(("raduction"))overset(C_(2)H_(5)OH+Na)tounderset("Ethanamine")(CH_(3)CH_(2)NH_(2))`
(vii) `underset("Nitromethane")(CH_(3)NO_(2))underset(("reduction"))overset(Sn//HCl)tounderset("Methanamine")(CH_(3)NH_(2))`
`underset(("Carbylamine reaction"))overset(CHCl_(3)//KOHDelta)tounderset("Methyl isocyanide")(CN_(3)NC)underset(("raduction"))overset(C_(2)H_(5)OH+Na)tounderset("Dimethylamine")(CH_(3)NHCH_(3))`
(viii) `underset("Propanamide")(CH_(3)CH_(2)COOH)overset(NH_(3))tounderset("Ammonium propanoate")(CH_(3)CH_(2)COONH_(4))`
`overset("Heat")tounderset("Propanamide")(CH_(3)CH_(2)CONH_(2))underset(("Hofmann bromamide reaction"))overset(Br_(2)//KOH,Delta)to`
`underset("Emthylamine")(CH_(3)CH_(2)NH_(2))overset(HONO)tounderset("Ethanol")(CH_(3)CH_(2)OH)underset(("Oxidation"))overset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))to`
`underset("Ethanal")(CH_(3)CHO)underset(("Oxidation"))overset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))tounderset("Ethanoic acid")(CH_(3)COOH)`
