Question

question 20 (5 points)
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isomers, such as acetic acid and methyl formate, have
a) the same chemical formula but different arrangements of bonds or atoms.
b) different chemical formulas.
c) the same chemical formula, arrangement of bonds, and orientation of atoms.
d) different empirical formulas.

Explanation:

Isomers are defined as compounds with the same molecular (chemical) formula but different structural arrangements (of bonds or atoms). Acetic acid (\(C_2H_4O_2\)) and methyl formate (\(C_2H_4O_2\)) have the same chemical formula but different structures. Option B is wrong as isomers have the same chemical formula. Option C is wrong because isomers differ in bond/atom arrangement. Option D is wrong as empirical formulas (simplest ratio) for isomers with the same molecular formula will also be the same.

Answer:

A) the same chemical formula but different arrangements of bonds or atoms.