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Organic Chemistry

Cool goIITian

Joined:	14 Feb 2010
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13 Mar 2010 19:03:15 IST

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how to know which alkene and alkyne is ppt with ammoniacal silver nitrate and not.

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how to know which alkene and alkyne is ppt with ammoniacal silver nitrate and not.

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Transmigrator

Blazing goIITian

Joined: 21 May 2008

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13 Mar 2010 19:24:14 IST

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Alkenes don't give white ppt with Ammoniacal Silver Nitrate.........................

Only those alkynes which have terminal triple bond and hence, an acidic H⁺ donationation capacity, give white ppt with Ammoniacal Silver Nitrate.......................Non-terminal alkynes don't.............

And all aldehydes give the white ppt.......................Ketones don't...............

सुपर मान

Hot goIITian

Joined: 7 Nov 2009

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14 Mar 2010 10:44:27 IST

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and formic acid(no other carboxylic acid) also gives tollen's test

Madhusudan Chavan

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Joined: 9 Mar 2007

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14 Mar 2010 11:22:39 IST

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Alkenes do not react with ammoniacal silver nitrate.

Only terminal alkynes ( carbon-carbon triple bond with hydrogen on one carbon) react with ammoniacal silver nitrate to form ppt.

Vivek Roy

Blazing goIITian

Joined: 20 May 2008

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14 Mar 2010 12:03:25 IST

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Alpha keto hydroxy compounds also gives tollens test..........

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