CaC2 + 2H2O -----> CH≡CH + Ca(OH)2
A--etyn
CH≡CH + H2 ---Pt----> CH2=CH2
B----eten
CH2=CH2 + Br2 -----> CH2Br-CH2Br
C---1,2dibromoetan
CH2Br-CH2Br + Zn-----> CH2=CH2 + ZnBr2
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CaC2 + 2H2O -----> CH≡CH + Ca(OH)2
A--etyn
CH≡CH + H2 ---Pt----> CH2=CH2
B----eten
CH2=CH2 + Br2 -----> CH2Br-CH2Br
C---1,2dibromoetan
CH2Br-CH2Br + Zn-----> CH2=CH2 + ZnBr2
B----eten