Out of the two - trans-but-2-ene and cis-but-1-ene, which is more stable and why
Trans-but-2-ene has less heat of hydrogenation than the cis-isomer, therefore it is more stable.
In the trans isomer, the two methyl groups are present on the opposite side as compared to cis-isomer. As a result, the Vander Waal's forces of attraction in trans isomer are less. This means that the trans isomer has less heat of hydrogenation and is more stable than the cis-isomer.
How will you explain that there exists two varieties of 1, 2,-dichloroethene while there is only one type of 1, 2-dichloroethane?
What happens when 2-Bromobutane is heated with alcoholic KOH. Account for the product formed.
Draw cis and trans isomers of the following compounds. Also, write their IUPAC names:
(i) CHCl = CHCl
(ii) C2H5CCH3 = CCH3C2H5
Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?
What happens when butan-2-ol is heated with concentrated H2SO4. Account for the product formed.
Which of the following compounds will show cis-trans isomerism?
(i)(CH3)2C = CH-C2H5
(ii) CH2 = CBr2
(iii) C2H5CH = CH-CH2
(iv) CH3CH = CClCH3
