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Chapter 22: Problem 49

Name the products formed when the following reagents add to 1-butene. (a) \(\mathrm{H}_{2}\) (b) \(\mathrm{Br}_{2}\)

Short Answer

Expert verified
Question: Identify the products formed when 1-butene undergoes reactions with the following reagents: (1) Hydrogen, (2) Bromine. Answer: The reaction products are (a) Butane, and (b) 1,2-dibromobutane.

Step by step solution

01

Addition of Hydrogen to 1-butene

When 1-butene reacts with hydrogen, it undergoes an addition reaction called hydrogenation, in which hydrogen atoms are added to the carbon atoms that were previously double bonded. This reaction requires a catalyst, typically a metal such as platinum (Pt) or palladium (Pd). The final product is a saturated alkane. Here, the reaction will convert 1-butene to butane: 1-butene + H2 → butane
02

Addition of Bromine to 1-butene

When 1-butene reacts with bromine, it undergoes a halogen addition reaction, in which the halogen atoms are added to the carbon atoms that were previously double bonded. This reaction is a representative of electrophilic addition reaction in alkenes. The final product will be a dihalide. In this case, the reaction will convert 1-butene to 1,2-dibromobutane: 1-butene + Br2 → 1,2-dibromobutane In summary, the reaction products are: (a) Butane (b) 1,2-dibromobutane

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Most popular questions from this chapter

Write structures for all the structural isomers of compounds with the molecular formula \(\mathrm{C}_{4} \mathrm{H}_{6} \mathrm{ClBr}\) in which \(\mathrm{Cl}\) and \(\mathrm{Br}\) are bonded to a doublebonded carbon.

The general formula of an alkane is \(\mathrm{C}_{n} \mathrm{H}_{2 n+2}\). What is the general formula of an (a) alkene? (b) alkyne? (c) alcohol derived from an alkane?

Writean equation for the reaction of chloroaceticacid \(\left(K_{\mathrm{a}}=1.5 \times 10^{-3}\right)\) with trimethylamine \(\left(K_{\mathrm{b}}=5.9 \times 10^{-5}\right) .\) Calculate the equilibrium constant for the reaction. If \(0.10 M\) solutions of these two species are mixed, what will be their concentrations at equilibrium?

When the conjugate acid of aniline, \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}{ }^{+}\), reacts with the acetate ion, the following reaction takes place: \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}{ }^{+}(a q)+\mathrm{CH}_{3} \mathrm{COO}^{-}(a q) \rightleftharpoons \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}(a q)+\mathrm{CH}_{3} \mathrm{COOH}(a q)\) If \(K_{\mathrm{a}}\) for \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}{ }^{+}\) is \(1.35 \times 10^{-5}\) and \(K_{\mathrm{a}}\) for \(\mathrm{CH}_{3} \mathrm{COOH}\) is \(1.86 \times 10^{-5}\) what is \(K\) for the reaction?

Name the following alkenes. (a) \(\mathrm{CH}_{2}=\mathrm{C}-\left(\mathrm{CH}_{3}\right)_{2}\) (b) \(\left(\mathrm{CH}_{3}\right)_{2}-\mathrm{C}=\mathrm{C}-\left(\mathrm{CH}_{3}\right)_{2}\) (c) \(\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{2} \mathrm{CH}_{3}\)
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