An organic compound A having molecular formula C4H8 on hydration with dilH2SO4 gives B B on treatment with conc - Chemistry - Haloalkanes and Haloarenes

Question

An organic compound A having molecular formula C4H8 on hydration
with dilH2SO4 gives B B on treatment with conc HCL and
anhydrousZnCl2 gives C and on treatment with sodium ethoxide gives
back A Identify the compounds A,B and C and write the equations
involved

Geetha · Accepted Answer

A hydrocarbon of formula C4H8 on hydration with dil sulphuric acid gives B
 So A is an alkene with general formula CnH2n and it gives alcohol B
 Alcohol Breacts with Anhy ZnCl2 and Con HCl (lucas reagent) to give haloalkane
 Which reacts withsodium ethoxide to  give an alkene back
CH3CH2CH=CH2 →Hg2+dil H2SO4 CH3CH2CH(OH)-CH3 →anhy ZnCl2Con HCl CH3CH2CH(Cl)-CH3 →C2H5ONa CH3CH2CH(OC2H5)-CH3 + NaCl       A                                                             B                                                    C CH3CH2CH(OC2H5)-CH3 →∆ CH3CH2CH=CH2  + C2H5OHThus A = 1-buteneB= 2 -butanolC =2-chlorobutane

An organic compound A having molecular formula C4H8 on hydration with dilH2SO4 gives B. B on treatment with conc HCL and anhydrousZnCl2 gives C and on treatment with sodium ethoxide gives back A. Identify the compounds A,B and C and write the equations involved.