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Hrishabh Nayal
Hrishabh Nayal
04:35
Can someone tell me how oxidation state of metal affects metal - carbon bond and carbon - oxygen bond in metal carbonyls?
 
2 hours later…
Safdar
Safdar
07:02
Ferric sulphide reacts with oxygen gas to produce ferrous sulphate and sulphur dioxide. The gram equivalent weight of ferric sulphide in the above reaction is:

What is the n-factor?
The reaction is $$\ce{Fe2S3 + 5O2 -> 2FeSO4 + SO2 }$$
 
1 hour later…
ronak jain
ronak jain
08:26
@Safdar hi
Can anyone tell that are there question in jee advanced out of syllabus prescribed by jee on its official website ?
Safdar
Safdar
@ronakjain did I not answer that?
ronak jain
ronak jain
@Safdar where did you ?
Safdar
Safdar
@ronakjain whatsapp..
ronak jain
ronak jain
@Safdar I have not your whatsapp number
Ok
Safdar
Safdar
@ronakjain Did someone reply on whatsapp?
 
3 hours later…
ronak jain
ronak jain
11:16
@Safdar are you here ?
One doubt in organic mechanism
Safdar
Safdar
@ronakjain chemguide.co.uk/organicprops/acids/….
ronak jain
ronak jain
No. Other ....
Safdar
Safdar
masterorganicchemistry.com/tips/decarboxylation
ronak jain
ronak jain
@Safdar I wanted to know that in halogenation of alkanes, the halogen free redical attacked the alkane
Safdar
Safdar
@ronakjain selectivity?
ronak jain
ronak jain
11:18
And thab alkyl radical is formed
My question is that why the halogen radical doesn't directly attaches to alkane and removes H
Which reacts with the other radical
@Safdar and ya. I also want to know about this
Safdar
Safdar
@ronakjain Isn't that what happens? wdym?
ronak jain
ronak jain
No. Firstly alkyl radical is formed than it attacks on a Cl2 molecules
But why the Cl radical doesn't directly attaches
Safdar
Safdar
@ronakjain every possible combination happens.. we just mention some of them..
ronak jain
ronak jain
Ok
But in every book...
No mention other ways
Do you know of any ?
And how to determine which has to be mentioned
Safdar
Safdar
@ronakjain they won't ask such questions.. Board pass karli na? ab subjective nahi hoga..
ronak jain
ronak jain
11:22
But if I try to write mechanism for a reaction . Than how will I find which has to be mentioned
Safdar
Safdar
@ronakjain Here, you won't be wrong.. FRM doesn't have a mechanism.. you attack all possible cases, and then check..
ronak jain
ronak jain
Ok
Now selectivity ?
Safdar
Safdar
user image
Divide the given values by number of possible hydrogens and take the ratio of primary and secondary..
ronak jain
ronak jain
What is mean by reactivity and selectivity ? On what Factors do they depend ?
Safdar
Safdar
IIRC..Tertiary:Secondary:primary :: 5.8:3:1 for chlorine and 1600:50:1 for bromine. this is probabilty. Multiply this by number of carbons
ronak jain
ronak jain
11:27
Didn't get all this
@Safdar from here I didn't understand anything
Can you explain in more easy way ?
Safdar
Safdar
I'll explain later? in like 30 mins?
ronak jain
ronak jain
Ok
Ping me when you are ready
 
6 hours later…
ronak jain
ronak jain
17:26
@Safdar hi
@Safdar in case of addition of HOX in alkenes an cyclic carbo cation intermediate is formed . So is it possible to have hydride or methyl shift in this case ?

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