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Wurtz Reaction
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Na/Et2O. We discuss many examples about the advanced level reactions, simple reactions and how does the carboanion attack the carbon with the halide to give us products in the Wurtz reaction.

## Sachin Rana is teaching live on Unacademy Plus

Sachin Rana
IIT Bombay | Taught three under 100 AIR in JEE Advanced | YouTube: Sachin Rana (180k+ subs) | Qualified NSEA | Passionate Teacher.

(105)
U
how come 400 has 2 odd days? you mentioned 400 has zero odd
Bhavuk Pujara
a year ago
Hi Anoop, Example#? Time stamp?
Anoop kumar
a year ago
6.40 . previous chapter we learned 400 has 0 odd number but now its telling 2 odd. please explain
Bhavuk Pujara
a year ago
Okay. Let me explain again- 400 AD and all “centuries” multiples of 400 like 800 AD, 1200 AD & so on are Leap years. 1 Leap year has 1 day extra than a normal year i.e. a Leap year has 366 days, when divided by 7 will give me 2 as Remainder. Thus, any leap year (400 AD or 2004 AD or 1908 AD) has 2 Odd days, always... Clear now?
Bhavuk Pujara
a year ago
Where in the previous chapter have we ever mentioned that 400 AD has 0 Odd days? Please mention the video name, link and time stamp...
Anoop kumar
a year ago
2 video. you mentioned 400 has 0 odd. 100 has 5 odd. 200 has 3 odd. 300 has 1 odd
Anoop kumar
a year ago
video 3. 6.29
Bhavuk Pujara
a year ago
Hi Anoop, please share the video/lesson name. For me as Educator, Number sequencing may be different than for you as Learner.
Anoop kumar
a year ago
no. of odd years till yyyy
Bhavuk Pujara
a year ago
But I got your question. Ok so 5, 3, 1, 0 sequence of Odd days you’re referring to. So what it means is that in 1st 100 years —> Odd days are 5, In 1st 200 years —> Odd days are 3 & so on.... However, within a Leap year, say 400 AD, 800 AD etc the No. of Odd days within that year alone is 2, because R[366/2] = 2... Is it clear now?
Anoop kumar
a year ago
so there how we split into 400 and take it as 0 odd.
Bhavuk Pujara
a year ago
Yes so that’s “No. of odd days till the year XXXX”, what we discussing here is “No. of Odd days within a year XXXX”... These as 2 diff. things.... Clear now?
Bhavuk Pujara
a year ago
If not, I’d request you to watch the concept videos again (In English and Hindi both) to understand again better. I’ve explained everything above in writing as well. Let me know if doubt still persists.
Anoop kumar
a year ago
ok. so anything making a combination we can take 400 as 0 odd but specifically 400 ,800 etc has 2 odd. am i right Bhavak?
Bhavuk Pujara
a year ago
Correct. Try out a few examples and let me know if doubt persists...:)
Hello Sir in 4th slide I have a doubt that in dimerizing it forms an anti aromatic ring which would be highly unstable. Is that possible??
Sachin Rana
3 years ago
The ring would be unstable. The compound as a whole would be stable. The double bonds are not only on the middle ring as in various cases, they can be taken to be inside the cyclohexane too.
Shivam Prakash
3 years ago
can't they trimerise?? which would form aromatic benzene in middle!!
Sachin Rana
3 years ago
Oh, good thinking dude! I never thought about it tbh. But maybe the activation energy won't be enough for the trimerisation.
Shivam Prakash
3 years ago
thnx for ur help
Shivam Prakash
3 years ago
but sir it is reaching aromaticity which would decrease its energy to a greater extant
Sachin Rana
3 years ago
That would increase the resonance energy and decrease the potential energy. To be honest, I'm not so sure about why it doesn't get trimerised as I haven't studied anything about it yet. The only factor that seems plausible is that the activation energy might be low.
Shivam Prakash
3 years ago
ok
Mithlesh Kumar
2 years ago
sir if we take 3 moles of R-X in wurtz reaction then what product will formed?
Priya Tanwar
7 months ago
comeon ...mithlesh 3 mols doesn't mean 3 molecules...its 3×6.o22×10^23 molecules...hence, dimerization only takes place..
How does R-X + e gets converted Into R negative
Sachin Rana
3 years ago
It is a radical type reaction. I just thought of simplifying it by this type.
SATYAM SIROHI
3 years ago
ok thanks
SATYAM SIROHI
3 years ago
thank you for this work which you are doing and best of luck for your future projects. I think this is your line.....I wait eagerly each and every video of yours thank you again.
H
Harshit
a year ago
Priya Tanwar
7 months ago
yes.. harshit it should be ...scince it is occurs in partially non -polar medium ..so it should follow free radical mechanism
VP
you are awesome bro, if my college had lecturers like you I would be fearless about any exam. keep it up bro and also try to make 2 to 3 videos on holidays and weekends. even sankranthi holidays are ahead so try to upload more vids so that you can also complete inorganic before our boards
Sachin Rana
3 years ago
Okay.
Sir everything is Awesome..just the problem is we are lacking with time..so it would be great if you do it much more early..As you only said that till January we should finish with Our topics..please sir rake a note..
Sachin Rana
3 years ago
Yeah, I'm trying.
Hello Sir, First of all a huge salute to you for devoting your precious time in creating these lectures, you are doing a very Nobel work! In this video you have shown the Wurtz Reaction mechanism by carbanion formation but I generally prefer the Free radical mechanism for reaching to the answer. In Solomons and Fryhle actually both of the reaction mechanisms are given. So I wanted to ask that would there be any drawbacks if I'll use the Free Radical Mechanism?
Sachin Rana
3 years ago
It's your wish. There are no drawbacks.
Ujjawal Rathore
3 years ago
Thank You!
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