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Chapter 2: Problem 144

The compound \(\mathrm{CH}_{3}-\mathrm{C}=\mathrm{CH}_{2}-\mathrm{CH}_{3}\) when treated with \(\mathrm{NaIO}_{4}\) in presence of \(\mathrm{KMnO}_{4}\) gives

Short Answer

Expert verified
Answer: The products formed are acetic acid (CH₃-COOH), formic acid (CH₂COOH), sodium manganate (NaMnO₄), potassium iodate (KIO₄), and water (H₂O).

Step by step solution

01

Identify the functional groups

The given compound is CH₃-C≡CH₂-CH₃, which contains an alkyne functional group (C≡C) at the second and third carbon atoms.
02

Reaction of alkynes with NaIO₄ and KMnO₄

When an alkyne reacts with NaIO₄ in the presence of KMnO₄, the alkyne undergoes oxidative cleavage. In this reaction, the triple bond (C≡C) gets broken, and the two fragments formed are oxidized to obtain carboxylic acid groups (-COOH).
03

Apply the oxidative cleavage to the given compound

CH₃-C≡CH₂-CH₃ undergoes oxidative cleavage at the alkyne bond, resulting in two fragments: 1. CH₃-COOH (acetic acid or ethanoic acid) 2. CH₂COOH (formic acid or methanoic acid)
04

Write the final balanced equation

The final balanced equation for the reaction of CH₃-C≡CH₂-CH₃ with NaIO₄ in the presence of KMnO₄ can be written as: CH₃-C≡CH₂-CH₃ + 2 NaIO₄ + 2 KMnO₄ → CH₃-COOH + CH₂COOH + 2 NaMnO₄ + 2 KIO₄ + 2 H₂O

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Most popular questions from this chapter

An organic compound ( \(3.0 \mathrm{~g}\) ) gave on complete combustion, \(3.476 \mathrm{~g}\) of \(\mathrm{CO}_{2}\) and \(1.422 \mathrm{~g}\) of water. The molecular weight of the compound is 228 . Give molecular formula of the compound.

\(\mathrm{H}_{3} \mathrm{C}-\mathrm{C} \equiv \mathrm{CH}+\mathrm{CH}_{3} \mathrm{MgI} \longrightarrow(\mathrm{A})+\mathrm{CH}_{4}\) \((\mathrm{A})+\mathrm{CH}_{3} \mathrm{I} \longrightarrow(\mathrm{B})+\mathrm{MgI}_{2}\) (A) and (B) are (a) \(\mathrm{H}-\mathrm{C} \equiv \mathrm{C}-\mathrm{MgI}\) and \(\mathrm{CH}_{4}\) (b) \(\mathrm{H}_{3} \mathrm{C}-\mathrm{C} \equiv \mathrm{C}-\mathrm{CH}_{3}\) and \(\mathrm{CH}_{4}\) (c) \(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{MgI}\) and \(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{CH}_{3}\) (d) \(\mathrm{H}_{3} \mathrm{C}-\mathrm{C} \equiv \mathrm{C}-\mathrm{I}\) and

When \(\mathrm{n}\) -hexane is passed over heated alumina or chromic oxide catalyst under pressure, the product formed is (a) Iso hexane (b) cyclohexane (c) butane and ethane (d) Benzene

A hydrocarbon having only primary hydrogens is (a) Cyclohexane (b) 2-methylpropane (c) 2, 3 dimethyl but-2-ene (d) \(\mathrm{n}\) - butane

Alkynes are less reactive than alkenes towards electrophilic reagents. But the alkyne chemistry is useful for organic synthesis, in the form of hydration of the triple bond, formation of metalacetylides, selective reduction of alkynes and few other related reactions.
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