2<span>CH3-CH2-OH----Al2O3, 425 *C------<span>>CH2=CH-CH=CH2 + 2H2O+H2</span></span>
<span><span>CaCO3+4C=CaC2+3CO</span></span>
<span><span>CaC2+2H2O=Ca(OH)2 + C2H2</span></span>
<span><span>C2H2+H2--Ni(Pt)---> C2H4 +H2O--H2SO4--><span>CH3-CH2-OH</span></span></span>
<span><span><span>CH3-CH2-OH + HCl=<span>CH3-CH2-Cl + H2O</span></span></span></span>
<span><span><span><span><span>CH3-CH2-Cl-----KOH(спирт)----->CH2=CH2+ KCl+ H2O</span></span></span></span></span>
1) there2) are3) is4) there
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<span>А)2) CL2+ H2=2HCL </span>
<span>2HCL+CaCO3=CaCL2 + H2O+ CO2 </span>
<span>CaCL2+ 2AgNO3= Ag2CL + Ca(NO3)2 </span>
<span>3Cl2+2Fe=2 FeCL3 </span>
<span>FeCl3+3NaOH= 3NaCl+ Fe(OH)3</span>