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## #1 2013-10-25 03:13:03

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

### ketone

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

friendship is tan 90°.

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## #2 2013-10-25 18:53:51

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 18,884
Website

### Re: ketone

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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #3 2013-10-26 16:56:31

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

### Re: ketone

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.

friendship is tan 90°.

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## #4 2013-10-26 17:42:50

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 18,884
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### Re: ketone

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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #5 2013-10-28 23:52:08

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

### Re: ketone

friendship is tan 90°.

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## #6 2013-11-18 04:58:31

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 18,884
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### Re: ketone

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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #7 2013-11-18 07:02:33

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,658

### Re: ketone

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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## #8 2013-11-18 08:16:12

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,657

### Re: ketone

Yep, and they smell good too.

In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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## #9 2013-11-18 08:18:26

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,658

### Re: ketone

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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## #10 2013-11-18 08:22:41

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,657

### Re: ketone

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 agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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## #11 2013-11-18 08:29:14

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,658

### Re: ketone

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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## #12 2013-11-18 15:20:09

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 18,884
Website

### Re: ketone

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?

'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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #13 2013-11-18 20:47:24

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,658

### Re: ketone

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.

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

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## #14 2013-11-19 00:43:10

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 18,884
Website

### Re: ketone

Thanks

'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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #15 2013-11-19 10:57:03

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,658

### Re: ketone

No problem.

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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## #16 2013-11-20 17:17:36

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

### Re: ketone

thanks ,I wanted that too.

friendship is tan 90°.

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## #17 2014-01-23 17:18:06

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

### Re: ketone

what's the formula for ether

friendship is tan 90°.

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## #18 2014-01-23 17:42:15

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 18,884
Website

### Re: ketone

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

'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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #19 2014-01-23 17:44:49

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 18,884
Website

### Re: ketone

'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'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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## #20 2014-01-25 01:52:31

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,028

### Re: ketone

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

friendship is tan 90°.

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