Al+H2SO4=Al2(SO4)3+H2
Al2(SO4)3+Cr(OH)3=Al(OH)3+Cr2(SO4)3
1)C12H22O11+H2O=2C6H12O6
<span>С6Н12О6+2Cu(OH)2[ t ] -> CH2OH-(CHOH)4-COOH+Cu2O+2H2O
</span>2)C2H5OH+CuO=CH3CHO+Cu+H2O
CH3CHO+Ag2O=CH3COOH+2Ag
Ca(OH)2+2CH3COOH=(CH3COO)2Ca+2H2O
3) C2H5OH=C2H4+H2O
3C2H4<span> + 2</span>KMnO4<span> + </span>4H2O<span> = 3CH2(OH)-CH2(</span>OH<span>) + </span>2MnO2<span> + </span>2KOH