Drawing Isomers

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Drawing isomers is a skill we should expect to develop in a Chemistry class. In case you’re not sure what are isomers, they are basically structures that have the same chemical formula (same number of atoms) but are connected differently, therefore, having different structural formula.  The best way to explain how to draw an isomer is to use an example. In this case, we’re going to use C6H14. A tip (Tip #1) that I find useful when drawing isomers is to identify the functional groups present in the given formula. Looking at C6H14, it basically consists of only carbons and hydrogens, making it a hydrocarbon. Now, which type could it be though – is it an alkane, alkene or alkyne? We can figure out which general formula (alkane, alkene or alkyne) C6H14 fits in. The general […]

Flowchart to classify homolog, isomer, same compound or not.

All about Homolog and Isomer!

Posted Leave a commentPosted in Homolog and isomer

Along with knowing the basic functional groups that are present in organic compounds, chances are high you will encounter these two concepts: Homologous series and Isomerism. Homologous series (homolog for short) is like a family consisting of siblings that possess the same/similar traits. For example, the most basic homologous series consists of unbranched alkane. Check out the list the first 10 siblings below. Notice that their structure look kind of the same? The only difference between one sibling and the next one is the extra CH2.  That’s one of the characteristics that define homolog. Also, homologs share the same functional group and general formula (CnH2n+2 in our case of unbranched alkane). Since their structure is so similar, that contributes to them having rather similar physical properties – like boiling point, melting point, physical states, density, etc. […]