convert 2 bromopropane to 1 bromo propane
bromomethane to ehane
SODIUM acetate to ehane
Case-1 CH3CHBrCH3 + alc. KOH → CH3CH=CH2 + KBr + H2O
CH3CH=CH2 + HBr CH3CH2CH2Br
Case-2 2CH3Br + 2Na → C2H6 + 2NaBr
Case-3 2CH3COONa + 2H2O C2H6 + 2NaOH + 2CO2 + H2