3 номер. Где превращения из cac2

CaC2+2HOH=Ca(OH)2+C2H2

3C2H2(t)=C6H6

C6H6+CH2=CHCl(AlCl3)= C6H5-CH=CH2+HCl

C6H5-CH=CH2+HOH=C6H5-CH(OH)-CH3

C6H5-CH(OH)-CH3+CuO=C6H5-CO-CH3+Cu+H2O.

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