Помогите написать цепочку уравнений C6H6-----C6H5------C2H5--------CO2

) C2H6 =(t; Cr2O3) C2H4 + H2 2) C2H4 =(t; Cr2O3) C2H2 + H2 3) C2H2 + H2O =( Hg(2+); H(+) ) CH3COH 4) CH3COH + H2 =(Ni) C2H5OH + H2O 5) C2H5OH + CH3OH =(t<150; H2SO4(конц) ) C2H5-O-CH3 + H2O 6) C2H5-O-CH3 + HI = CH3OH + C2H5I 7) CH3OH + HCl <=> CH3Cl + H2O 8) CH3Cl + C3H7Cl + 2Na = C4H10 + 2NaCl 9) C4H10 =(Cr2O3; t) C4H8 + H2 10) C4H8 + H2O =(H3PO4) C4H9OH 11) C2H2+H2 =(t; Ni) C2H4  C2H4+HCl = C2H5Cl 12) nC2H5Cl =(t: Ni) ( -CH(Cl) - CH2- )n 13) C2H6 + Br2 =(t) C2H5Br + HBr 14) 2C2H5Br + Na = C4H10 + 2NaBr 15) C4H10 + 2,5O2 =(p; катализатор) 2CH3COOH + H2O 16) CH3COOH + C3H7OH =(H2SO4) CH3COOC3H7 + H2O 17) CH3COOC3H7 =[H] C3H7OH +CH3COOH (На деле берут Zn и HCl, т.к. в первые моменты их р-ции выделяется атомарный водород.) 18) C3H7OH + Na = C3H7ONa + 0,5H2 19) CH3COOH + NaOH = CH3COONa + H2O 20) 2CH3COONa + H2SO4 = 2CH3COOH + Na2SO4 2CH3COOH + Mg(OH)2 = (CH3COO)2Mg + 2H2O