12:18 20:43 convert pascal into bar 23:21 weight by weight percent question 29:53 non volatile solute means i(vant hoff factor) = 1 as alpha will be zero 33:15 if not given take dissociation or association 100 percent means alpha =1 therefore i=n n = 2 in case of agbr 42:51 taking ethanol as solvent as freezing point depression constant is always defined for solvent 44:59 i=1 as ethanol is non polar solvent 46:03 henry law question 50:19 both liquid and gaseous phase question 56:13 no info given about i so take i = 1
@@Akshatanand_40 by the way wo maine khud kae liye banaye thae aur tujh jaise nikamo ko hate comment pass karne sae phursat milegi tabhi to kamaegae padh le beta nahi to kuch saalo mae tera road par thikana ho jayega samjha
For question 2 you can find molality by by the no of moles of agno3 because it is acting as solute 1Molar =1 mole in 1000mL 1/1000mole=1mL 1/50 mole = 20 mL Moles of Agno3 is 0.02 Now mass of KCl is 25 g Now you can find molality 👉No.of moles of Agno3/mass of KCl (in kg ) Which is 4/5 And after multiply i×kf×molality 2×2×4/5=3.2( near to 3) 👆 Answer
Answer to 1:43:37 i for C2H5OH is 1. ΔTf=ikfm ΔTf=i (considering molarity = molality) Ba3(PO4)2H2O−−→3Ba2++2PO3−4i=5 Na2SO4H2O−−→2Na++SO2−4i=3 KClH2O−−→K++Cl−i=2 Li3PO4H2O−−→3Li++PO3−4i=4 Value for freezing point will be lower for that solutions which have higher value of van't Hoff factor than C2H5OH Here all have higher value of i than C2H5OH So, answer is 4
1 bar== 1atm or 1atm= 1.01325 bar 1 atm= 1.013*10^5 Pa Percentage of dissociation/100 = alpha In freezing point formula , molality of solute mein nich solvent's mass not solute jiska ∆Tf nikal rhe 1atm=10^5 Pa i for glucose sucrose alcohol urea =1 X = moles in liq phase Y= moles in vapour phase
summary points of solution 11:28 equation 45:50 solvent ka hi depresion const define hota ha isliye ethanol solvent ha = mass of solvent is 50 not 48.2 1:16:08 calculation redooo 1:26:00 pa ma pucha ha to bar ko 10^5 sa multiply krna ha 1:35:25 approximations 1:38:15 dekho ques ky pucha ha redo the above ques and try hw ques best of luck for 2 nd attemt
For my revision 18:11 kcl mai depression nikalna hai to law of equivalence laga ke molarity nikalna usse nikal jayega 25:16 iss question mai mass of solvent 100 nahi mass of solution 100 hai to usko minus karke solvent ka mass nikalana or phir molality mai solvent ka hi mass dalna
@@smileboy1357 bhai mera nahi hua 91.3 aya jee mai video se to bahot help mili but agar aap koi app se pyq solve karoge to jyada Better rahega ( Maine marks se kiya tha )
Change in temp. is always same in both the units ...ye confuse karne ke liye celcius m diya h...change Kelvin and celcius m same hi hota h ..to vo thik h.. I hope you got it👍🙂
Very very❤ Thank you ❤ sir 2ghante lagatar question krwane ke liye Literally pure lecture me apki aur humari energy jra bhi down nahi hue kyuki sab question ho rahe the ❤❤❤❤❤❤❤❤❤❤❤❤❤❤ Love you from ❤
1:03:34 sir aapne hi toh pehle glat kardiya hadbadi me 😂 or phir hume keh rhe ho aaise question gadbad nhi hone chahiye the No offense bs hasi aagayi thi is baat pr isiliye kiya baki sir bhot accha padhate hai ❤
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I love 😘 physics because he had become for me upper wallah 😁during exams
@@radhapriyadasi_72 exactly 😂
@@dimensionsless0212 😅🤣🤣
class notes nahi mil skta kya??
@@Wildbeauty_Ss Bro kya tumhe class notes mile ?
Agr mile toh btana
12:18
20:43 convert pascal into bar
23:21 weight by weight percent question
29:53 non volatile solute means i(vant hoff factor) = 1 as alpha will be zero
33:15 if not given take dissociation or association 100 percent means alpha =1 therefore i=n n = 2 in case of agbr
42:51 taking ethanol as solvent as freezing point depression constant is always defined for solvent
44:59 i=1 as ethanol is non polar solvent
46:03 henry law question
50:19 both liquid and gaseous phase question
56:13 no info given about i so take i = 1
Padhle bhai... ye sab karne se ghar nahi chalega
@@Akshatanand_40😂😂😂
Tq bro ❤❤
@@Akshatanand_40 by the way wo maine khud kae liye banaye thae aur tujh jaise nikamo ko hate comment pass karne sae phursat milegi tabhi to kamaegae padh le beta nahi to kuch saalo mae tera road par thikana ho jayega samjha
@@Akshatanand_40😂
03:00 If Density of Solvent 1 then molality = molarity
15:00 Moles of KCl = Moles of AgNO3
1:37:00 Conversion
1:43:21 Practice
HARDEST PART IS NOT THE QUESTIONS BUT THE STUPIDLY LENGTHY CALCULATIONS.
I agree lol
Lekin competition idhar hi kam hojata hai
Jo alas nhi karega wo aage chala jayega
bro these mf units bro
truly
@spicy1pastryya kya hota hay
@@Chamanlaalsaini 🤣
For question 2 you can find molality by by the no of moles of agno3 because it is acting as solute
1Molar =1 mole in 1000mL
1/1000mole=1mL
1/50 mole = 20 mL
Moles of Agno3 is 0.02
Now mass of KCl is 25 g
Now you can find molality
👉No.of moles of Agno3/mass of KCl (in kg )
Which is 4/5
And after multiply
i×kf×molality
2×2×4/5=3.2( near to 3)
👆 Answer
got you :)) 👍
got you :)) 👍
You got :)) 👍
got You :)) 👍
got you :)) 👍
(why everyone spamming this tho 😭)
vapour phase liquid phase 50:34
pascal into bar 20:46
17:10
55:08 i value
1:41:00 alcohol i = 1
Q1 : 2:40(G1 Done Rev)
Q2: 10:14(G1 Done,Rev)
Important questions of 2022:
1. 42:00👍
2. 46:00(Do this)
3.50:20(DONE)
4.54:50👍
5.58:15👍
6.1:01:43👍
7.1:03:44
8,1:11:00
9) 1:16:30
10)1:20:00
11)1:23:00
12)1:24:00
13)1:26:58
14)1:30:00
15)1:35:40
16)1:38:27
17)1:40:00
18)HW
19)HW EASY
20)DO IT
Done
Dude Revise Dec 10th-15th (Rapid Revision phase)
कौन कौन मानता है कि राहुल सर एक महान शिक्षक है।🙏🙏🙏🙏🙏🙏
इसमें कदापि शंका नहीं मित्र
भ्राता हम मानते है
सभी शिक्षक महान ही होते है ❤❤
@@monishbondre अति उत्तम वचन भ्राता!
शिक्षक तो भगवान का रूप होते हैं उन में से एक हमारे राहुल सर है इन्हे शत शत नमन
Answer to 1:43:37
i for C2H5OH is 1.
ΔTf=ikfm
ΔTf=i (considering molarity = molality)
Ba3(PO4)2H2O−−→3Ba2++2PO3−4i=5
Na2SO4H2O−−→2Na++SO2−4i=3
KClH2O−−→K++Cl−i=2
Li3PO4H2O−−→3Li++PO3−4i=4
Value for freezing point will be lower for that solutions which have higher value of van't Hoff factor than C2H5OH
Here all have higher value of i than C2H5OH
So, answer is 4
SIR DONE... DID 80% QUESTIONS BY MYSELF.. FEELING CONFIDENT NOW💖🔥🖤🧡
W
did u get iit
Hey can you tell me is this enough or l have to do more pyq
One of the best techer of physical chemistry 🎉❤❤
Bhai aapne jee main ka attempt diya?
Agr diya to aapko in videos se Kitna help hua
Please btado brother
These types of videos give final touch to your preparation of any chapter
2:30
10:10 .
19:00 .
23:00
28:00
32:00
39:00
42:00
46:00
50:00
54:00
58:00
1:00:00
1:03:00
1:11:00 .
1:16:00
1:19:00
1:23:00
1:24:00
1:26:00
1:30:00
1:35:00
1:38:00
1:40:00
Thank you ❤
Na 1D Na 2D aur na hi 3D only Rahul Dudi
Being an NDA aspirant, I answered 80% questions correctly!! All thanks to Alakh Pandey sir for his indomitable 5-year-old superb lectures ...
Nda 2 2024 exam you qualified?
1 bar== 1atm or 1atm= 1.01325 bar
1 atm= 1.013*10^5 Pa
Percentage of dissociation/100 = alpha
In freezing point formula , molality of solute mein nich solvent's mass not solute jiska ∆Tf nikal rhe
1atm=10^5 Pa
i for glucose sucrose alcohol urea =1
X = moles in liq phase
Y= moles in vapour phase
summary points of solution
11:28 equation
45:50 solvent ka hi depresion const define hota ha isliye ethanol solvent ha = mass of solvent is 50 not 48.2
1:16:08 calculation redooo
1:26:00 pa ma pucha ha to bar ko 10^5 sa multiply krna ha
1:35:25 approximations
1:38:15 dekho ques ky pucha ha
redo the above ques and try hw ques
best of luck for 2 nd attemt
bookmarks :
27:37 - retry (calculation intensive and bit confused )
32:21 - rety (conceptual doubt - rxn nahi ata )
lo reply karke yaad dila deta, revise karlo
@@abhinav7352 arre thank you so much almost bhul gaya tha yeh revise karna
firse padhle bhai
Retry krle
One of the best teacher in physics wallah
At 1:05:53 why did we take 1.5 as vol of acetic acid instead of 1.2 ml??
Exactly
Small tricky concepts to keep in mind while revising
51:29
1:25:00
1:27:30
1:32:16
1:38:00
Ye teacher to mast hai 🗿❤️🗿
03:00 If Density of Solvent 1 then molality = molarity
15:00 Moles of KCL = Moles of AgNO3
1:11:10 no of glycine units
1:37:00 Conversion
1:18:29
Great Question practice sir... Loved it.. now confident to solve any question from this chapter ✨
Important Questions -
1:29:50
1:16:09
1:03:30
1:09:44
50:09
39:12
1:34:00
49:23 sir can't we use the formula for moles of water volume/22.7. ??? Instead of converting volume into gram and then dividing by its molar mass??
I think we can use this formula only when substance is in gas phase
@@anjanab.krishna2052 yep, exactly 💯
😊
@@anjanab.krishna2052 It is valid only for gas and at STP.
For my revision
18:11 kcl mai depression nikalna hai to law of equivalence laga ke molarity nikalna usse nikal jayega
25:16 iss question mai mass of solvent 100 nahi mass of solution 100 hai to usko minus karke solvent ka mass nikalana or phir molality mai solvent ka hi mass dalna
Bhaiya aapko in videos se kitni help mili
jee mains me aapse question solve hue in videos ki help se ya nhi
Plz btadijiye
@@smileboy1357 bhai mera nahi hua 91.3 aya jee mai video se to bahot help mili but agar aap koi app se pyq solve karoge to jyada Better rahega ( Maine marks se kiya tha )
@@RamHirani-lf9im thanks for guidance bhai
i think u are going to be the next famous teacher on yt
He is already Famous❤ bro 😂
He is literally goat now 🐐
Bro predicted the future
57:05 actual temp is in Kelvin according to all units given , so it is misprint in question
Change in temp. is always same in both the units ...ye confuse karne ke liye celcius m diya h...change Kelvin and celcius m same hi hota h ..to vo thik h..
I hope you got it👍🙂
@@prachigaur8182 okay 👍 thanks
Respect button for Rahul Dudi sir ji ❤❤❤❤❤❤❤❤❤🎉🎉🎉🎉🎉 legend of chemistry
💯 WORTH WATCHING
1:10:52
Agar solute ka volume large hota aqueous solution se to hum.
Solvent ka weight find krne ke liye acetic acid ka density rakhate kya?
So sweet,the topic was so clear right now 👍
Thank you Sir for this session..!!🙌❤
Most Underrated teacher ever ✅
Thank you very much sir for such an amazing practice session ❤
Ques 1 : 3:00
Ques 2 : 10:07
Ques 3
Ques 4
Ques 5
Ques 6
Ques 7
Ques 8
Sir mein yes no bolta hoon par aapko pata kaise chalega 😁😁😁😁😁❤️❤️❤️
sir heart'beat se pta kr lengee😅😅
😮
😂@@surendrabishnoi2929
Main sir ko call krke bata dunga
Main sir ko call krke bata dunga
Excellent teaching 👌🏻👍🏻👌🏻👍🏻👌🏻👍🏻👌🏻👍🏻👌🏻👍🏻👌🏻👍🏻👌🏻👍🏻👍🏻👍🏻❤❤❤❤... Very nice explanation and simple methods to solve enjoyed it😊
37:43 sir 3no me gadbad hoi hai.....! 😢😮
From Lakshay jee 2024 ❤❤❤❤❤❤
Same
Same
Yes brother
@@rajnikesherwani736 same
Same
1:09:38 I thought something wrong in this Question . 🤨😶
Bhai iska i ki value wrong hai na
Kya batau sirji.. bas shukriya yaar❤
Sir at 1:12:52 apne 2.8 use kia hai instead of 2.5
almost saare question numerical me hi kyun diye nta ne .....jab answer itne bhayanak he toh😫
Bro Aaj kal most of the physical ke question integer mein hi aate Hain inorganic or organic ke MCQ mein aate Hain
Jee is also bhayankar exam
Dhanyawad guruji 🙏🚩
17:00 sir we can use M1×V1=M2×V2 for m
Best explanation thank sir ❤❤❤❤❤
sir please...planner provide karo aage ke lectures ka
28:22 silly mistake that maine diff in T ki jagah sidha lagaya tha
Sir mene aap ke sath sare question kiya solution chapter mere fav chapter hogaya h sir thank you sir for this session ❤
1:09:46 at here weight of solute is Wrong as I think
Calculation toh hogi hi nhi exam me
27:17
∆Tf ki value nikaalo
Khud se or calculator se match kro
Ek magic dikhega 😂
i was confused by this for 10 mins 😆😅
Mera answer 50231, calculator ka 30 🥰🕺🏻
Vapour pressure of pure liquid of A 114 hai Answer....
Sir aapki slide mai answer wrong hai
lakshyas are here✊👊👊🤛
Please increase frequency of videos 2nd attempt is near
Aapka result kya rha ??
Lakshya jee 2025 🙌
19:00
38:30
48:00
50:30
1:08:00
1:15:00
1:18:00
1:25:00
1:35:00
1:09:09 mass of acetic acid will 1.2×1.02?
Thnx ..
Yess
Yes
11:25 / 1:45:21
Solutions - Most Important Questions in
1:32:51 ,approximation aase lete hain👆👆
Very very❤ Thank you ❤ sir 2ghante lagatar question krwane ke liye
Literally pure lecture me apki aur humari energy jra bhi down nahi hue kyuki sab question ho rahe the ❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Love you from ❤
Completed🤓✅✅✅✅✅✅✅ thank you sir 💖💖💖💖💖
@@surendrabishnoi2929 lakshya wale hona
Best teacher of physical chemistry
Exam banane wala khud calculater le ke baithta hoga aur hum log ko ayse complex calculation diya hai 😂😂
Great teacher ❤
What a positive vibe
Maximum questions solve ho gye , i m confident now 🤩
Dudi Bhai Jindabad ❤
22:45 Sir jee ke paper me toh four box hi rehte h integer type questions ke liye lekin aapka toh 5 digit mean answer aa raha hai
Computer per hoti hai exam.
22:40 answer is 622500 not 62250 if I'm wrong let me know
U r wrong
Same question
it is coming 622500
62500 aa Raha hai
Thank you Sir❤
literally sir love you very well strucutred way of solving question
on an average ek session me kitne q. karwate hai teachers?
Dudi sir ioc physical acha padhate hai aur Faisal sir organic. But inko opposite roles de rkhe h 😭
1:03:34 sir aapne hi toh pehle glat kardiya hadbadi me 😂 or phir hume keh rhe ho aaise question gadbad nhi hone chahiye the
No offense bs hasi aagayi thi is baat pr isiliye kiya baki sir bhot accha padhate hai ❤
Thank u so much sirrr❤❤💙
1:05:47 volume 1.2 honi chaiye na instead of 1.5?
Sir maine aapki koi baat par vishwaas nhi kiya or sare question khud solve kiye😁😁😁😁
Nice
Bhut shi
19:00 warra concept, moles of agno3=moles of kcl na hence molarity can be found out
26:00
51:00 important
1:09:00
Thank you sir ji for this amazing session ❤❤❤❤
1:09:38 me apne galat kiya h 1.5 nhi 1.2 hoga tab ans ayega
1:10 mass of acetic acid 1.02×1.2 hona chahiye n 🤔
22:51
Sir R ki value to bar me given hai?
Love uh Sir..... as Always incredible Session it was ❤️
Thankyou so much sir ❤❤❤❤❤ 1:43:42
1:13:07 sir why 2.8 when 2.5 is given
Anyone before test?
I am hare
Me
❤❤
Kal mera jee ka exam h kon kon mere jaese jee ke ek din pahle dekh raha 😢😅
Kaisa gya
Hlo
@@Domin123_ achha gya tha
@@r1shu-46 percentile???😅
@@anamikatiwari3592 kam tha yaar🥲
You are a great sir❤❤❤
0:00 to 42:00-2023 pyqs
At 18:20 why here molality and molarity are taken same??
Because density is 1g/ml😊
@@shivam-eh2ck ohk thanks🌸 to ye chiz hr jgh use kr skte h mtlb jha pe 'm' pta ho but 'M' nhi h or density agr 1g/mL-¹ hai to we can take m~M ???
@@Kashish_329 ha sahi samjhai aap😀😄
@@Kashish_329 aap jee 2024 prepare kar rahai ho kya
@@shivam-eh2ck han
Thanks for this very helpful video ❤❤❤
please make one for ionic equilibrium too
50:29
1:04:36
1:15:38
1:16:44
1:27:08
1:31:38
1:36:07
You are best teacher ☺️💕
1:01:18 , Totally relatable 🥲
Areee hain na bol na daada 😊
1:10:25 sir ne acitic acid ko 1.5 ml liya h instead of 1.2 ml
Gajab josh ke sath class start hua sir thank you
Sir if we practice these type of questions can we attend a question from solutions chap in jee mains ??
Ysss
No
firstly, vo main hota hai mains nhi 🤣...jisko bhi dekho mains mains krta rhta hai 😂
Sir plzzz, theoretical and graphs based questions bhi rkha kijiye 🙏🏻🙏🏻....