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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 894

hello friends

well i have started studying carbon and its compounds,but i could not clear my concept on ketone.

pls help me out.

n.wikipedia.org/wiki/Ketone

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Hi;

We are also reading the same NCERT chapter in school.

Ketone is just a functional group which contains a carbon atom holding an oxygen with 2 hands and two other carbons with two other seperate hands.

E.g,

H H

| |

H - C - C - C - H

| || |

H O H

That contains three carbons, so it is propanone. Had it been four, we would call it butanone.

The main common feature of all ketones is that they have this functional group inside them.

- C -

||

O

***DO NOT CONFUSE KETONES WITH ALDEHIDES***

Now, comes aldehydes, which are similar but in the case of aldehydes, the two hands of the carbon hold one carbon and one hydrogen.

E.g,

H H H

| | |

H - C - C - C = O

| |

H H

This is propanal.

Note that both of them have the formula C[sub]3[/sub]H[sub]6[/sub]O

But the structure matters too

*Last edited by Agnishom (2013-10-25 19:02:50)*

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 894

thnk u so much for making it so simple and easy to understand.

i was really confused between aldehyde and ketone that why they have same formula inspite of different functional groups and you cleared it all.

thnx again.

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You're welcome.

I'm proud to be an Indian too.

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 894

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Now, I would love to have someone explaining me Ester

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,885

Aren't they just a combinations of an alchohol and a carboxilyc acid?

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 83,086

Yep, and they smell good too.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,885

Yeah. As far as I remember, they give fruit its smell.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 83,086

Long time ago they would use Oil of Wintergreen as furniture polish.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,885

Note to Agnishom: To get esters, just take H from the OH group of the carboxilyc acid and the whole OH group from the alchohol and join the remainders together. You will also get water as a product.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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anonimnystefy wrote:

Aren't they just a combinations of an alchohol and a carboxilyc acid?

Yes, can you draw the functional group of the esters?

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,885

Here it is:

O

||

R1-C-O-R2

R1 and R2 can be different, but it is not necessary.

Here lies the reader who will never open this book. He is forever dead.

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Thanks

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,885

No problem.

Here lies the reader who will never open this book. He is forever dead.

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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 894

thanks ,I wanted that too.

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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 894

what's the formula for ether

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Isnt it C[sub]2[/sub]H[sub]2[/sub]?

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

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Sorry, Are you talking about this http://en.wikipedia.org/wiki/Ether ?

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'Humanity is still kept intact. It remains within.' -Alokananda

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**niharika_kumar****Member**- From: Numeraland
- Registered: 2013-02-12
- Posts: 894

yes i was talking about ether and now i got the answer.

thanks.

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