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Inorganic Chemistry

Cool goIITian

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8 Jan 2008 00:00:25 IST

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Kjeldahlising a compound?

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What is meant by Kjeldahlising a Compound?

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Tarin Bansal

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8 Jan 2008 00:22:19 IST

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Well kjehladahl is a method for estimation of elements, Nitrogen I think, I dont remember well.

Madmax

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8 Jan 2008 14:16:29 IST

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Ya I think Tarin is right
The Kjeldahl method is a method to determine the quantity of N in a cpd.

So I guess Kjeldahlising a Compound means either finding the quantity of N in it or carrying out the Kjeldahl method on the given cpd.

Post the question We may be able to help you better....

For more on the Kjeldahl method:
http://en.wikipedia.org/wiki/Kjeldahl_method
http://www.coleparmer.com/techinfo/techinfo.asp?htmlfile=KjeldahlBasics.htm

Akshay Pamnani

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8 Jan 2008 15:25:33 IST

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This method is basically used for quantitative analysis of organic compounds

Tarin Bansal

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8 Jan 2008 15:35:25 IST

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It is used only for N not for all organic compounds.

sowjanya gudipati

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8 Jan 2008 19:47:17 IST

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kjeldahls methodis used to determine nitrogen content in organic compounds in which nitrogen is attached to cabron and hydrogen (bt not in azo,nitro and azoxy)

principle:nitrogen is heated with conc sulphuric acid in copper sulphate which converts it into ammonium sulphate . this ammonium sulphate is treated with excess of alkali which decomposes to ammonia from which nitrogen content is calculated.

catalyst used is coppersulphate and mercury .

potassium sulphate is also added to raise the boiling point of sulphuric acid.

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