3Al+6HClO3=AlCl3+2Al(ClO3)3+3H2O
CH3-Cтройная свзяьС-СH3 + H2=CH3-CH=CH-CH3 (Ni,Pt,t=150-300)
2CH4=C2H2+3H2
C2H2+H2O=CH3CHO
CH3CHO+H2=C2H5OH
C2H5OH+HBr=C2H5Br+H2O
C2H5Br+NaOH=C2H4+NaBr
C2H4+H2O=C2H5OH
C2H5OH+CuO=CH3CHO+Cu+H2O
CH3CHO+Ag2O=CH3COOH+2Ag
CH3COOH+NaOH=CH3COONa+H2O
50 см³=0,05 дм³
n(HCl)=0,05*2=0,1 моль
2HCl+Zn=ZnCl₂+H₂
0,1/2=x/1 => x=0,05 моль
m(Zn)=0,05*65=3,25 г
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