Which of the following statements concerning functional groups is true?Question 3Select one:a.Functional groups do not affect a molecule's structure.b.A molecule's functional group can be easily determined by its molecular formula.c.Functional groups always involve double bonded atoms.d.A molecule's functional group will determine its physical properties.
Question
Which of the following statements concerning functional groups is true?Question 3Select one:a.Functional groups do not affect a molecule's structure.b.A molecule's functional group can be easily determined by its molecular formula.c.Functional groups always involve double bonded atoms.d.A molecule's functional group will determine its physical properties.
Solution
The correct answer is:
d. A molecule's functional group will determine its physical properties.
Explanation:
a. This is not true because functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. They directly affect a molecule's structure.
b. This is not true because a molecule's functional group cannot be easily determined by its molecular formula. The molecular formula only gives the number and type of atoms in a molecule, not how they are arranged or what functional groups they form.
c. This is not true because functional groups do not always involve double bonded atoms. Some functional groups involve single bonds, some involve double bonds, and some involve triple bonds.
d. This is true because the functional group of a molecule greatly influences its physical properties like solubility, boiling point, melting point etc. For example, alcohols have a hydroxyl functional group (-OH) which makes them polar and therefore more soluble in water.
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