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NCERT Class XII Chemistry
Chapter - Alcohols, Phenols and Ethers
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Question : 39 of 45
Marks: +1, -0
Give structures of the products you would expect when each of the following alcohol reacts with (a) HCl−ZnCl2\mathrm{HCl} - \mathrm{ZnCl}_2 (b) HBr and (c) SOCl2\mathrm{SOCl}_2.
(i) Butan-1-ol (ii) 2-Methylbutan-2-ol
Solution:  
 Reagent →
Alcohol ↓		  HCl−ZnCl2\mathrm{HCl} - \mathrm{ZnCl}_2  HBr  SOCl2\mathrm{SOCl}_2
 CH3CH2CH2CH2OHButan-1-ol\underset{\text{Butan-1-ol}}{\mathrm{CH_3CH_2CH_2CH_2OH}}  No reaction at room temperature.  CH3(CH2)2CH2Br\mathrm{CH_3(CH_2)_2CH_2Br}  CH3(CH2)2CH2Cl\mathrm{CH_3(CH_2)_2CH_2Cl}
 H3CCH2−C∣OH∣CH3−CH32-Methylbutan-2-ol\underset{\text{2-Methylbutan-2-ol}}{\mathrm{H_3CCH_2-}\overset{\mathrm{CH_3}}{\overset{\vert}{\underset{\mathrm{OH}}{\underset{\vert}{\mathrm{C}}}}}-\mathrm{CH_3}}  H3CCH2−C∣Cl∣CH3−CH3forms instantly\underset{\text{forms instantly}}{\mathrm{H_3CCH_2-}\overset{\mathrm{CH_3}}{\overset{\vert}{\underset{\mathrm{Cl}}{\underset{\vert}{\mathrm{C}}}}}-\mathrm{CH_3}}  H3CCH2−C∣Br∣CH3−CH3\mathrm{H_3CCH_2-}\overset{\mathrm{CH_3}}{\overset{\vert}{\underset{\mathrm{Br}}{\underset{\vert}{\mathrm{C}}}}}-\mathrm{CH_3}  H3CCH2−C∣Cl∣CH3−CH3\mathrm{H_3CCH_2-}\overset{\mathrm{CH_3}}{\overset{\vert}{\underset{\mathrm{Cl}}{\underset{\vert}{\mathrm{C}}}}}-\mathrm{CH_3}
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