You are watching: Which compound is a saturated hydrocarbon?
We start our research of organic surfacetoairnewyork.comistry with the hydrocarbons, the most basic organic compounds, which are composed of carbon and hydrogen atoms just. As we detailed, tright here are several different kinds of hydrocarbons. They are distinguiburned by the types of bonding in between carbon atoms and the properties that outcome from that bonding. Hydrocarbons via just carbon-to-carbon single bonds (C–C) and also existing as a consistent chain of carbon atoms additionally bonded to hydrogen atoms are dubbed alkanes (or saturated hydrocarbons). Saturated, in this situation, implies that each carbon atom is bonded to four various other atoms (hydrogen or carbon)—the most possible; there are no double or triple bonds in the molecules.
The word saturated has the very same interpretation for hydrocarbons as it does for the dietary fats and also oils: the molecule has actually no carbon-to-carbon double bonds (C=C).
We formerly introduced the three simplest alkanes—methane (CH4), ethane (C2H6), and also propane (C3H8) and they are displayed aget in Figure (PageIndex1).
Methane (CH4), ethane (C2H6), and also propane (C3H8) are the start of a collection of compounds in which any two members in a sequence differ by one carbon atom and 2 hydrogen atoms—namely, a CH2 unit. The initially 10 members of this series are offered in Table (PageIndex1).
Consider the series in Figure (PageIndex3). The sequence starts through C3H8, and also a CH2 unit is included in each step relocating up the series. Any family of compounds in which nearby members differ from each various other by a definite aspect (here a CH2 group) is called a homologous series. The members of such a collection, dubbed homologs, have actually properties that vary in a continuous and predictable manner. The principle of homology offers company to organic surfacetoairnewyork.comisattempt in a lot the exact same means that the regular table offers company to inorganic surfacetoairnewyork.comisattempt. Instead of a bewildering range of individual carbon compounds, we can examine a couple of members of a homologous series and from them deduce some of the properties of various other compounds in the series.
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