IB Chemistry Standard Level (SL) Practice Exam

Question: 1 / 400

Which of the following statements about secondary alcohols is true?

They have the hydroxyl group attached to a carbon bonded to two other carbons

Secondary alcohols are characterized by having the hydroxyl group (-OH) attached to a carbon atom that is bonded to two other carbon atoms. This structural feature is fundamental in defining secondary alcohols in the broader classification of alcohols, which also includes primary and tertiary alcohols.

In primary alcohols, the carbon atom attached to the hydroxyl group is only bonded to one other carbon, while in tertiary alcohols, the carbon is bonded to three other carbons. This distinction is critical in organic chemistry, influencing the reactivity and properties of these compounds.

Understanding this structure can also help in recognizing their behavior in reactions, such as oxidation, where secondary alcohols are typically oxidized to form ketones. The other statements do not accurately reflect the characteristics of secondary alcohols: they may not necessarily be less reactive than primary alcohols, they do not contain an aromatic hydroxyl group, and they are not the least common form of alcohols. Each type of alcohol plays an important role in organic chemistry, and secondary alcohols are certainly prevalent in various chemical contexts.

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They are less reactive than primary alcohols

They contain an aromatic hydroxyl group

They are the least common form of alcohols

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