(i) C2H5COONa + NaOH C2H6 + Na2CO3
Hence, the organic compound prepared by this reaction is ethane.
(ii) CH3I + 2H− CH4 + HI
The organic compound prepared by the given reaction is methane.
(iii) C2H5Br + KOH (alcoholic solution) C2H4 + H2O +KBr
The organic compound prepared by this reaction is ethane.
(iv) CaC2 + 2H2O C2H2 + Ca(OH)2
Hence, the organic compound prepared by the given reaction is ethyne.