Question

structural isomers are compounds that have ____ empirical molecular formula and ____ structural formula. the statement above is completed by the information given in a row of the table below:
a) different different
b) different the same
c) the same the same
d) the same different
e) different identical
question 8 (1 point)
the iupac name of compound ( ch_3c(ch_3)chch_3 ) is
a) 2 - methylbut - 3 - ene
b) 3 - methylbut - 2 - ene
c) 1 - methylbut - 2 - ene
d) 3 - methylbut - 3 - ene
e) 2 - methylbut - 2 - ene

Explanation:

Structural isomers are compounds that share the same molecular formula but have different structural arrangements. This means they have the same number and types of atoms (same empirical molecular formula) but the atoms are connected differently (different structural formula).

For the IUPAC naming of \(CH_3C(CH_3)CHCH_3\):

• First, identify the longest carbon - chain with the double bond. The longest chain has 4 carbon atoms (but -).
• The double bond is between the second and third carbon atoms. When numbering, we want the double bond to have the lowest possible number.
• There is a methyl group (\(-CH_3\)) on the second carbon atom.

Answer:

For the first question: d) the same, different
For the second question: e) 2 - methylbut - 2 - ene