another by additional CH2 group, is called a Homologous series is defined as a systematic order of organic compounds having same functional group that can be represented by same general formula and prepared by same method. Give one example. The series like methanol, ethanol, propanol, butanol and so on is also a homologous series. …, What term did Mendel use for genes? If you continue browsing the site, you agree to the use of cookies on this website. Departament d'Educació - Generalitat de Catalunya, No public clipboards found for this slide, Science Teacher at Jose Marti Technical High School. You can tell that all the molecules in the series (from methane to pentane) have the same general formula: Furthermore, from methane to ethane and from ethane to propane (i.e. This also contains similar general formula and chemical properties. A homologous series is a series of compounds, which has the same functional group. (i) Why did Rutherford predict there is large empty spacewit Answer. General formula. There are a number of homologous series in organic compounds. Similarly the series of alkene and alkynes also forms homologous series. are all part of the alkane homologous series. Figure 02: Boiling Points Gradually Change in a Homologous Series Typically, the members of a homologous series contain a fixed set of functional groups that give these molecules similar chemical and physical properties. Looks like you’ve clipped this slide to already. But the chemical properties of a homologous series determined by the functional group remain same. A series of compounds where each consecutive member differs from one particular unit is called a homologous series. Alkanes, alkenes and alkynes are some examples for this series. Members of the homologous series are called homologs. Members of the same homologous series can be prepared through one common method. The alkanes, alkenes and cycloalkanes are examples of homologous series. Lets take a brief look at the homologous series of alkanes for example. Dr James Chemistry SPM Form 5 Chapter 2 Carbon Compounds. For example, a homologous series of straight-chain alkanes begin with methane, ethane propane, butane and pentane. Since there is a change in the physical properties, we can say that there would be an increase in the molecular size and mass. zoom id - 309 672 8037 passcode - 12 please join​, 1. For example, the series of alkanes i.e. Now customize the name of a clipboard to store your clips. A series of compounds with similar chemical properties, in which members differ from one another by additional CH2 group, is called a homologous series. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. As of this date, Scribd will manage your SlideShare account and any content you may have on SlideShare, and Scribd's General Terms of Use and Privacy Policy will apply. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Example: Alkane / Alkene / Alkyne / Alcohol. please please please please please give me a ans.​, sexy hot girl please join meeting meet.google.com/qey-zwyr-iqs​. Since there is a change in the physical properties, we can say that there would be an increase in the molecular size and mass. Methane, ethane, propane, butane, etc. Common examples of homologous structures are the bones in the forelimbs of various vertebrates, such as humans, dogs, birds and whales. Alcohols (R – OH), Aldehydes (R – CHO), Carboxylic acid (R – COOH), Ketones(R-C(=O)-R') are some of homologous series and their general formulae. Homologous series 1. In the above three series, each member differs from its proceeding member by a CH 2 unit. Examples: Ethane C 2 H 6, Propane C 3 … Where are the genes located?​, damorkrish748 me insta use nahi kar sakti kya karu me? Examples:- consecutive members of the series… A general formula is one in which the numbers of carbons are represented by the letter 'n' and the numbers of other elements as a function of 'n' A homologous series is a series of compounds, which has the same functional group. For example, the series of alkanes i.e. 1. The general formula of this series is CnH2n+2. With the increase in molecular mass in a homologous series the physical properties like melting points, boiling points and solubility in a particular solvent increases. If you wish to opt out, please close your SlideShare account. Learn more. It can be noticed that there is a difference of −CH2 unit between each successive compound. For example: The homologous series of alcohols (class) contains the hydroxyl functional group. Methane, ethane, propane, butane and so on is a homologous series. The difference between two consecutive members in their composition is –CH 2 unit. Scribd will begin operating the SlideShare business on December 1, 2020 Homologous Series. What is Homologous series. This also contains similar general formula and chemical properties. Similarly the series of alkene and alkynes also forms homologous series. What is a homologous series of carbon compounds ? The functional group attached to these compounds is alcohol. homologous series. Methane, ethane, propane, butane and so on is a homologous series. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. top. These compounds have similar chemical properties due to the addition of same kind of functional group throughout the chain. Homologous Series 2. Homologous series of alkenes are as follows: Homologous series of alkynes are as follows: Class 10 Chemistry Carbon and Its Compounds. You can change your ad preferences anytime. Give reasons(i) why did Rutherford predict electrons revolve aroundthe nucleus of atom? If you continue browsing the site, you agree to the use of cookies on this website. Give an example and list its three characteristics.  A series of compounds with similar chemical See our Privacy Policy and User Agreement for details. A homologous series is a group of chemicals which have similar chemical properties and … See our User Agreement and Privacy Policy. properties, in which members differ from one A series of carbon compounds in which same functional group substitutes the hydrogen atom is called a homologous series. This site is using cookies under cookie policy. Clipping is a handy way to collect important slides you want to go back to later. You can specify conditions of storing and accessing cookies in your browser. Some important series of aliphatic compounds are listed below: If we examine the unbranched alkanes, we notice that each alkane differs from the preceding alkane by one —CH 2 — group. A series of compounds in which the same functional group substitutes for hydrogen in a carbon chain is called a homologous series. The alkanes family is a homologous family which have linear molecules.