Chapter 12 Introduction to Organic Chemistry: Hydrocarbons. 12.1 Multiple-Choice Questions. 1) In the three-dimensional structure of methane, CH4, the hydrogen atoms attached to a carbon atom are aligned
A structural formula shows all the carbon and hydrogen atoms and how they are attached to one another. A condensed structural formula shows the hydrogen atoms right next to the carbon atoms to which they are attached. A line-angle formula is a formula in which carbon atoms are implied at the corners and ends of lines.
The condensed formula is CH 3 (CH 2) 4 CH 3. Although less commonly used, the condensed formula of hexane could also be written as CH 3 CH 2 CH 2 CH 2 CH 2 CH 3. It's easier to visualize a molecule from its condensed formula than from its molecular formula, particularly when there are multiple ways the chemical bonds could form.
Isomers are compounds that have THE SAME molecular formula, but DIFFERENT structural formulas (different arrangement of atoms). Structural isomers may have similar chemical properties (as in 2-methylpentane and 3-methylpentane) Using the organic acid from #12 and the alcohol used in #9, draw the structural formula and give the IUPAC name of the ester that would be formed. Finally, draw the structural formula (condensed structures or line formulas are just fine) for each of the compounds whose names appear below. 3-ethyl-2-methylpentane. 2-pentanol. cis-2-hexene. 3 ... JEE MAIN 2016 Question Paper ... 2-chloro-2-methylpentane on reaction ... hydrogen bonding in the condensed phase. Ice formed by heavy water sinks in normal water. (i) CH3 – CH2 – CH2 – CH2– CH2– CH3 n-Hexane 2-Methylpentane 3-Methylpentane 2,3-Dimethylbutane 2,2 - Dimethylbutane Based upon the number of carbon atoms attached to a carbon atom, the carbon atom is termed as primary (1°), secondary (2°), tertiary (3°) or quaternary (4°). Carbon atom attached to no other carbon atom as in ... u Alkanes have the general formula C n H 2n+2 Condensed Structural Formula Molecular Name Formula heptane hexane pentane butane propane ethane methane CH4 CH4 C2 H6 CH3 CH3 C3 H8 CH3 CH2 CH3 C4 H10 CH3 (CH 2)2 CH3 C5 H12 CH3 (CH 2)3 CH3 C6 H14 CH3 (CH 2)4 CH3 C7 H16 CH3 (CH 2)5 CH3