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| TEST TO DISTINGUISH BETWEEN ETHENE AND ETHYNE |
| Tuesday, July 22, 2008 |
this is one of the most confusing part of the organicum. we need to know the main test that distinguish ethene from ethyne since both are unsaturated hydrocarbons and as a result of this, both can decoulorise bromine water (BrOH) and acidified potassium tetraoxomanganate (VII) (KMno4). so how can we distinguish between these?
the answer lies in the fact that ethyne has the power to undergo certain reactions with the insoluble salts of the noble metals, especially those of copper and silver.
ethyne reacts with ammoniacal copper(I)chlorider(CuCl) copper(I)ethanoate(CH3COOCu) or copper(I)Nitrate(CuNO3) and with silver equivalence which are silver(I)chloride(AgCl), silver(I)ethanoate(CH3COOAg) and silver(I) nitrate(AgNO3). while ethene has no effect on all these salts.
hence, here lies the main reaction that distinguish ethene or ethylene from ethyne or acetylene. |
| posted by bamgold @ 4:49 PM |
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| 5 Comments: |
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thanks bro ,helped me a lot
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thanks bro,helped me a lot
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you are welcome ashvin...
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thank for your valuable information
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thanks bro ,helped me a lot