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

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,062

### 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: Riemann Sphere
Registered: 2011-01-29
Posts: 23,761
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'
I'm not crazy, my mother had me tested.

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

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,062

### 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
Real Member
From: Riemann Sphere
Registered: 2011-01-29
Posts: 23,761
Website

### 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'
I'm not crazy, my mother had me tested.

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

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,062

### Re: ketone

friendship is tan 90°.

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

Agnishom
Real Member
From: Riemann Sphere
Registered: 2011-01-29
Posts: 23,761
Website

### 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'
I'm not crazy, my mother had me tested.

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

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

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,194

### Re: ketone

Yep, and they smell good too.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

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

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 104,194

### 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.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.

Online

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

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

Agnishom
Real Member
From: Riemann Sphere
Registered: 2011-01-29
Posts: 23,761
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'
I'm not crazy, my mother had me tested.

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

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

Agnishom
Real Member
From: Riemann Sphere
Registered: 2011-01-29
Posts: 23,761
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'
I'm not crazy, my mother had me tested.

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

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,015

### 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
The knowledge of some things as a function of age is a delta function.

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## #16 2013-11-20 17:17:36

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,062

### 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: 1,062

### 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: Riemann Sphere
Registered: 2011-01-29
Posts: 23,761
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'
I'm not crazy, my mother had me tested.

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

Agnishom
Real Member
From: Riemann Sphere
Registered: 2011-01-29
Posts: 23,761
Website

### Re: ketone

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

'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'
I'm not crazy, my mother had me tested.

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

niharika_kumar
Member
From: Numeraland
Registered: 2013-02-12
Posts: 1,062

### Re: ketone

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

friendship is tan 90°.

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