Interpretation:
The condensed structural formula for the ammonium salt (lidocaine hydrochloride) is to be drawn. Secondly it has to be described why lidocaine hydrochloride is used rather than lidocaine.
Concept Introduction:
Lidocaine, also known as xylocaine and lignocaine, is a medication used to numb tissue in a specific area. It is also used to treat ventricular tachycardia and to perform nerve blocks. Lidocaine can be applied directly to the skin at the wounded region.
In primary amines, the N atom has one alkyl group (R) and two hydrogen atoms; with a general structure RNH2.
In secondary amines, the N atom has two alkyl groups (R) and one hydrogen atom; with a general structure R2NH.
In tertiary amines, the N atom has three alkyl groups (R) and no hydrogen atoms; with a general structure R3NH.
Amines react with an acid (H+ ion) to give the corresponding conjugate acid.
The condensed formula of a molecule is the formula where the symbols of atoms are listed in order as they appear in the molecule's structure with bond dashes omitted or limited.
To determine: The condensed structural formula for the ammonium salt (lidocaine hydrochloride) is to be drawn. Secondly it has to be described why lidocaine hydrochloride is used rather than lidocaine.
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