Which of the following correctly represents the products formed when 1-butene undergoes oxidative cleavage with hot, concentrated ${\mathrm{KMnO}}_4$ under acidic conditions?

• A. ${\mathrm{CH}}_3\mathrm{COOH}$ and $\mathrm{CO}{2}_{\mathrm{}}$
• B. ${\mathrm{CH}}_3\mathrm{COOH}$ and $\mathrm{HCOOH}$
• C. ${\mathrm{CH}}_3\mathrm{CH}{2}_2\mathrm{COOH}$ and $\mathrm{HCOOH}$
• D. ${\mathrm{CH}}_3\mathrm{CH}{2}_2\mathrm{OH}$ and $\mathrm{CO}{2}_{\mathrm{}}$

Answer: (B)

Verified step by step guidance

1. Identify the structure of 1-butene: it is an alkene with the formula CH3-CH=CH-CH3, where the double bond is between the second and third carbon atoms.
2. Recall that oxidative cleavage of alkenes with hot, concentrated KMnO4 under acidic conditions breaks the double bond and converts each alkene carbon into a carbonyl-containing compound (carboxylic acid or CO2 if the carbon is a terminal carbon with a hydrogen).
3. Break the 1-butene double bond between C2 and C3, resulting in two fragments: one containing carbons 1 and 2, and the other containing carbons 3 and 4.
4. Determine the oxidation products for each fragment: the fragment with C1 (a primary carbon) will be oxidized to acetic acid (CH3COOH), and the fragment with C4 (a terminal carbon with a hydrogen) will be oxidized fully to formic acid (HCOOH) or CO2 depending on the substitution and oxidation level.
5. Combine the products from both fragments to write the final products of the oxidative cleavage reaction.