Question

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1. CaC2 --> C2H2 --> C2H4 --> C2H5OH --> CH3CHO --> CH3COOH

Answer 1

CaC2+2H2O-->Ca(OH)2+C2H2
C2H2+H2-->C2H4
C2H4+HOH-->C2H5OH
C2H5OH+O2-->CH3COH+H2O ( kat Ag)
CH3COH+Ag2O-->CH3COOH+2Ag