/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 24 Draw the structures for two exam... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Draw the structures for two examples of unsaturated hydrocarbons. What structural feature makes a hydrocarbon unsaturated?

Short Answer

Expert verified
Two examples of unsaturated hydrocarbons are ethene and ethyne. Ethene has the molecular formula \( C_{2}H_{4} \) and its structure is: H H \ / C=C / \ H H Ethyne has the molecular formula \( C_{2}H_{2} \) and its structure is: H H \ / C≡C / \ H H The structural feature that makes a hydrocarbon unsaturated is the presence of double or triple bonds between the carbon atoms. Ethene has a double bond, and ethyne has a triple bond between carbon atoms, making them both unsaturated hydrocarbons.

Step by step solution

01

Understanding Saturated and Unsaturated Hydrocarbons

A hydrocarbon is an organic compound that consists of hydrogen (H) and carbon (C) atoms. These compounds can be classified into two main groups based on the type of chemical bonds between the carbon atoms: saturated and unsaturated hydrocarbons. Saturated hydrocarbons have single bonds between the carbon atoms, while unsaturated hydrocarbons have one or more double or triple bonds between the carbon atoms.
02

Knowing the General Formulas for Alkenes and Alkynes

Unsaturated hydrocarbons can be further divided into two categories: alkenes and alkynes. Alkenes have one or more carbon-carbon double bonds denoted by the general formula \( C_{n}H_{2n} \), whereas alkynes have one or more carbon-carbon triple bonds denoted by the general formula \( C_{n}H_{2n-2} \).
03

Drawing Examples of Alkenes and Alkynes

Let's draw the structures of one alkene and one alkyne, which are both unsaturated hydrocarbons. Example 1: Ethene (an alkene) Ethene has two carbon atoms and falls under the alkene category, so its molecular formula will be \( C_{2}H_{4} \). The structure of ethene is drawn as follows: H H \ / C=C / \ H H Example 2: Ethyne (an alkyne) Ethyne has two carbon atoms and falls under the alkyne category, so its molecular formula will be \( C_{2}H_{2} \). The structure of ethyne is drawn as follows: H H \ / C≡C / \ H H
04

Identifying the Structural Feature that Makes a Hydrocarbon Unsaturated

The structural feature that makes hydrocarbons unsaturated is the presence of double or triple bonds between the carbon atoms. In the examples, ethene has a double bond and ethyne has a triple bond between carbon atoms, making them both unsaturated hydrocarbons.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Poly(lauryl methacrylate) is used as an additive in motor oils to counter the loss of viscosity at high temperature. The structure is The long hydrocarbon chain of poly(lauryl methacrylate) makes the polymer soluble in oil (a mixture of hydrocarbons with mostly 12 or more carbon atoms). At low temperatures the polymer is coiled into balls. At higher temperatures the balls uncoil and the polymer exists as long chains. Explain how this helps control the viscosity of oil.

Reagents such as HCI, HBr, and HOH (H_O) can add across carbon-carbon double and triple bonds, with H forming a bond to one of the carbon atoms in the multiple bond and \(\mathrm{Cl}, \mathrm{Br},\) or OH forming a bond to the other carbon atom in the multiple bond. In some cases, two products are possible. For the major organic product, the addition occurs so that the hydrogen atom in the reagent attaches to the carbon atom in the multiple bond that already has the greater number of hydrogen atoms bonded to it. With this rule in mind, draw the structure of the major product in each of the following reactions. a. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}=\mathrm{CH}_{2}+\mathrm{H}_{2} \mathrm{O} \stackrel{\mathrm{H}^{2}}{\longrightarrow}\) b. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}=\mathrm{CH}_{2}+\mathrm{HBr} \longrightarrow\) c. \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{C} \equiv \mathrm{CH}+2 \mathrm{HBr} \longrightarrow\)

Give the structure of each of the following aromatic hydrocarbons. a. \(o\) -ethyltoluene b. \(p\) -di-tert-butylbenzene c. \(m\) -diethylbenzene d. \(1-\) phenyl- 2 -butene

Which of the noncyclic isomers of bromochloropropene are optically active?

Marathon Problems. These problems are designed to incorporate several concepts and techniques into one situation. For each of the following, fill in the blank with the correct response. All of these fill-in-the-blank problems pertain to material covered in the sections on alkanes, alkenes and alkynes, aromatic hydrocarbons, and hydrocarbon derivatives. a. The first "organic" compound to be synthesized in the laboratory, rather than being isolated from nature, was _____________which was prepared from____________. b. An organic compound whose carbon-carbon bonds are all single bonds is said to be______. c. The general orientation of the four pairs of electrons around the carbon atoms in alkanes is_______. d. Alkanes in which the carbon atoms form a single unbranched chain are said to be_______alkanes. e. Structural isomerism occurs when two molecules have the same number of each type of atom but exhibit different arrangements of the_______between those atoms. f. The systematic names of all saturated hydrocarbons have the ending_______ added to a root name that indicates the number of carbon atoms in the molecule. g. For a branched hydrocarbon, the root name for the hydrocarbon comes from the number of carbon atoms in the _________continuous chain in the molecule. h. The positions of substituents along the hydrocarbon framework of a molecule are indicated by the ________of the carbon atom to which the substituents are attached. i. The major use of alkanes has been in_______reactions,as a source of heat and light. J. With very reactive agents, such as the halogen elements, alkanes undergo _______reactions, whereby a new atom replaces one or more hydrogen atoms of the alkane. k. Alkenes and alkynes are characterized by their ability to undergo rapid, complete ______ reactions, by which other atoms attach themselves to the carbon atoms of the double or triple bond. 1\. Unsaturated fats may be converted to saturated fats by the process of ________ m. Benzene is the parent member of the group of hydrocarbons called ________ hydrocarbons. n. An atom or group of atoms that imparts new and characteristic properties to an organic molecule is called a ___________ group. 0.4 _________alcohol is one in which there is only one hydrocarbon group attached to the carbon atom holding the hydroxyl group. p. The simplest alcohol, methanol, is prepared industrially by the hydrogenation of ________ q. Ethanol is commonly prepared by the __________of certain sugars by yeast. r. Both aldehydes and ketones contain the _______group but they differ in where this group occurs along the hydrocarbon chain. s. Aldehydes and ketones can be prepared by _______ of the corresponding alcohol. t. Organic acids, which contain the __________ group, are typically weak acids. u. The typically sweet-smelling compounds called ____________ result from the condensation reaction of an organic acid with an___________.

See all solutions

Recommended explanations on Chemistry Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.