Lithium aluminium hydride (LiAlH4) is a powerful reducing agent. It reduces acetic acid into ethanol. acetic acid CH3COOHLiAlH4ether ethyl alcohol CH3CH2OH+H2O Na+C2H5OH is used in the reduction of alkyl halides to alkanes. R−X+2HNa+C2H5OHRH+HX H2+Pt is used in the catalytic hydrogenation. CH2=CH2+H2ptCH3−CH3 >C=OH2+Pt>CHOH Sn+HCl is used in the reduction of nitroalkanes into primary amine. CH3CH2NO2+6[H]Sn+HClCH3CH2⋅NH2+2H2O