Draw the condensed structural or line-angle formula if cyclic, for each of the following: (14.5)


d. ethylmethylammonium bromide

Verified step by step guidance

1. Identify the components of ethylmethylammonium bromide: it consists of an ethyl group (C2H5), a methyl group (CH3), and an ammonium ion (NH3+), combined with a bromide ion (Br-).
2. Recognize that the ammonium ion is a positively charged nitrogen atom bonded to four groups. In this case, it is bonded to one ethyl group, one methyl group, and two hydrogen atoms.
3. Draw the structure of the ammonium ion: start with the nitrogen atom (N) at the center, and attach the ethyl group (C2H5), the methyl group (CH3), and two hydrogen atoms (H) to it.
4. Since the nitrogen atom carries a positive charge, indicate this by placing a '+' sign next to the nitrogen atom in the structure.
5. Finally, add the bromide ion (Br-) to the structure, which is the counterion to balance the positive charge on the ammonium ion.

Key Concepts

Cyclic Structures

Cyclic structures are chemical compounds where atoms are connected to form a closed loop or ring. These structures can significantly influence the properties and reactivity of the compound. Understanding how to represent cyclic compounds in condensed structural or line-angle formulas is essential for visualizing their molecular geometry and bonding.

Condensed Structural Formula

A condensed structural formula provides a simplified representation of a molecule, showing the arrangement of atoms and their connectivity without depicting all the bonds explicitly. This format is useful for quickly conveying the structure of organic compounds, especially when dealing with larger molecules or those with functional groups, like ethylmethylammonium bromide.

Line-Angle Formula

The line-angle formula, also known as the skeletal formula, is a shorthand representation of organic molecules where vertices represent carbon atoms and lines represent bonds. This method simplifies the drawing of complex structures, making it easier to visualize cyclic compounds and functional groups, which is crucial for accurately depicting ethylmethylammonium bromide.