what is IUPAC?

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AS CHEMISTRY UNIT 2

Posted Tue 22nd May, 2012 @ 14:02 by Ishaq Ali

5 Answers

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It stands for International Union of Pure and Applied Chemistry. It is the system of naming organic and inorganic compounds.

Answered Tue 22nd May, 2012 @ 14:06 by Sophie
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It stands for International Union of Pure and Applied Chemistry. It is the system of naming organic and inorganic compounds.

how are you meant to apply it in aqa chemistry unit 2?

Answered Tue 22nd May, 2012 @ 14:17 by Ishaq Ali
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Not sure about AQA as I do Edexcel. You would use it if they asked you to name a certain compound.

Firstly you look at the longest chain of carbons and this gives you the prefix. meth = 1, eth = 2. prop = 3, but = 4, pent = 5 etc.

Then you look at what type of compound it is - is it an alkane, alkene, alcohol, aldehyde etc. and this gives you the suffix.

If it has a branch this is the methyl group is on carbon branches off and ethyl if two carbons branch off. the position of the methyl grrop is given by the number of the carbon it is on

For example - CH3CH(CH3)CH2CH3 has the IUPAC name of 2 methyl butane - the methyl is on the 2nd carbon, there are 4 carbons in the main chain and it is an alkane.

hope this makes sense as it is really hard to explain!

Answered Tue 22nd May, 2012 @ 14:35 by Sophie
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oh right, i get it i remember doing it just didnt know it was called IUPAC "/

thanks for your help

Answered Tue 22nd May, 2012 @ 14:55 by Ishaq Ali
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thank you for asking this question i have also been struggling with that

Answered Tue 22nd May, 2012 @ 21:35 by Agent006