Question

Draw structural formulas for the two structural isomers of heptane that have a single methyl group. Draw the molecules by placing atoms on the grid and connecting them with bonds.

Answer 1

To draw structural formulas for isomers of heptane with a single methyl group, we create 2-methylhexane with the methyl on the second carbon, and 3-methylhexane with the methyl on the third carbon. Both have the same molecular formula but differ in structure.

Step-by-step explanation:

To draw the structural formulas for the two structural isomers of heptane that have a single methyl group, we first need to consider the molecular formula of heptane which is C7H16. Since heptane consists of a seven-membered carbon chain, adding one methyl group to this would create an eight carbon structure but with two carbon atoms forming a branching chain. The two isomers can be 2-methylhexane or 3-methylhexane.

For 2-methylhexane, the structure would have a methyl group attached to the second carbon of the hexane chain. The structure would look like this:

• CH3-CH(CH3)-CH2-CH2-CH2-CH2-CH3

For 3-methylhexane, the methyl group is attached to the third carbon of the hexane chain. The structure would be:

• CH3-CH2-CH(CH3)-CH2-CH2-CH2-CH3

Remember that a structural isomer like 2-methylhexane or 3-methylhexane will have the same molecular formula, but a different arrangement of atoms.