Understanding 2-Butene Isomerism

The video tutorial explains how to write the structural formula for 2-butene, starting with its molecular formula C4H8. It describes the process of identifying the double bond in the carbon chain and constructing the structural formula. The tutorial also covers cis-trans isomerism, highlighting the differences between cis and trans isomers of 2-butene and their chemical and physical properties. The video concludes with a brief summary of the key points discussed.

What does the 'ene' suffix in 2-butene indicate?

• Presence of a quadruple bond

• Presence of a double bond

• Presence of a triple bond

• Presence of a single bond

How many carbon atoms are present in 2-butene?

• Three

• Two

• Four

• Five

In 2-butene, where is the double bond located?

• Between the first and second carbon

• Between the fourth and fifth carbon

• Between the third and fourth carbon

• Between the second and third carbon

What is the maximum number of bonds a carbon atom can form?

• Four

• Two

• Three

• Five

What is the structural difference between cis and trans isomers?

• Cis isomers have a single bond, trans have a double bond

• Cis isomers have a triple bond, trans have a double bond

• Cis isomers have atoms on the same side, trans on opposite sides

• Cis isomers have atoms on opposite sides, trans on the same side

Why can't the double bond in 2-butene rotate?

• Because it is a rigid bond

• Because it is a single bond

• Because it is a triple bond

• Because it is a double bond

Which isomer of 2-butene has constituents on the same side?

• Trans isomer

• Both isomers

• Cis isomer

• Neither isomer

What is the main reason for the different properties of cis and trans isomers?

• Different number of double bonds

• Different arrangement of atoms

• Different number of hydrogen atoms

• Different number of carbon atoms

Which isomer of 2-butene has constituents on opposite sides?

• Both isomers

• Trans isomer

• Cis isomer

• Neither isomer

What type of isomerism is exhibited by 2-butene?

• Conformational isomerism

• Geometric isomerism

• Structural isomerism

• Optical isomerism