Polymers is the toughest part of Petrochemical...but I love it ,....These questions are benificial for UPSC IFOS 2024 Mains....thanks Toughest & Very important topics " Polymers "
A 5g/L of polymer solution is prepared with a polymer of molar mass 25kg. The osmotic pressure (in atm) of this polymer solution at 25^o C? Consider RT= 2500 J/mol Answer : 0.005 atm
solution pi/c = RT/ Mn where P = osmotic pressure, c is concentration Mn = number avg molecular weight of polymer. R =0.0826 L atm mol-1 K-1; T = 298 K now P = cRT/ Mn here Mn = molar mass where M = 25kg 5X0.0826X298 =123.074/25X1000 = 0.00492 atm= 0.005 atm approx.
sir here a question from csir june 2013 A polymer sample has the following composition No of molecules Molecular weight 10 1000 50 2000 40 4000 The PDI of polymer is a) 85000/27 b)85/81 c)850/729 d)729/850
Polymers is the toughest part of Petrochemical...but I love it ,....These questions are benificial for UPSC IFOS 2024 Mains....thanks
Toughest & Very important topics " Polymers "
Thank you so much Sir, how easiest way you have to make us understand.. thanks again.
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The contour & rms length of a polymer chain modelled as a random coil, with N=1000,l=150 pm are closest to?
Nl contour length and √n.l is the rms length
Very useful video sir Thank you so much.pls upload more questions
A 5g/L of polymer solution is prepared with a polymer of molar mass 25kg. The osmotic pressure (in atm) of this polymer solution at 25^o C? Consider RT= 2500 J/mol
Answer : 0.005 atm
solution
pi/c = RT/ Mn
where P = osmotic pressure, c is concentration Mn = number avg molecular weight of polymer.
R =0.0826 L atm mol-1 K-1; T = 298 K
now P = cRT/ Mn
here Mn = molar mass where M = 25kg
5X0.0826X298 =123.074/25X1000 = 0.00492 atm= 0.005 atm approx.
the number average molecular weight of a polymer sample containing equal number of molecules of molecular mass 10^4 and 10^15 is
sir here a question from csir june 2013 A polymer sample has the following composition
No of molecules Molecular weight
10 1000
50 2000
40 4000
The PDI of polymer is a) 85000/27 b)85/81 c)850/729 d)729/850
Solution,Mn=2700. Mw=85000/27. Then cal PDI=Mw/Mn. Ans,850/729. Option C
Thank you sir,for your valuable time.wishes for your research work.
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sir can I explain the kinetics of addition polymerization
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Chain configuration of macromolecules discussion
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z avg mass Ni Mi 3 / NiMi2 or
Ni3Mi/ Ni2Mi which one one is correct ...i have a huge doubt plz reply meeeee
Sir isme osmotic pressure sedimentation method etc
Nhi krne kya??
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sir plz make video on kinetics of chain polymerisation .....plz plz
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Thank u sir pls explain polymers compound
Which book is good to follow this polymer chemistry?
Sir make a video on approximate methods
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Sir make a video abouts molecular spectroscopy and bio inorganic chemistry
Molecular Spectroscopy will be uploaded soon
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Plz bro make video about lattice energy & hydration energy in coordination compounds
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Sir 2018 December ka macromolecules ka vedeo uploaded kijiye !
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You're welcome 😊
Please reply me how to get ur material
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When will you make video on surface chemistry like this one ?
Sir at 22:30 there is also an option matching with the ans €N/Mi2 Ni....
S Singh,
No over there N is in numerator and other values is in denominator.
But in our answer, N is in denominator.
@@AllBoutChemistry my mistake...Tq sir
No problem
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Hello sir .... Tomorrow is their any class on unacademy...
Yes Sneha, it's on Chemical Kinetics, tomorrow
Which book are best for electro Chemistry
You can follow puri Sharma Pathania
Sir please upload minimum 2 vedios per week ...
BRIJESH KUMAR, I'll try for sure.
Sir dispersity of polymeric sample
Sir thank you..
Thank u sir...
Plz solve polymer question from June 2018
Thanks sir
I am waiting
I think in june 2018 one question was asked from osmotic pressure
Sir i have doubt plz clear it 18:32 here my answer is coming Mm
14000/Mm > 1 condition of polydispers system
Send ALL ABOUT CHEMISTRY
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Name rexn I've made on Unacademy, plz watch there
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chemistry wid Bikash, I will add the.
Sir what about polymer kinetics
Thanku sir
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Sir can you explain how to find out polymer chain length from rate of reaction?
Polymer chemistry
imp book tellme sir
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Hindi me bola karo but not english
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sab achhe se dikhta hai tum apna phone ka brightness badhao😊😊😊
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