small correction... temperature is directly propotional to volume ..therefore increase in volume will result in decrease of molarity. thankyou for the lecture.
She said that because it is an aq. solution and increase in temp will vapourise the water and will lead to increase in conc. of solute in the solution and that would lead to increase in molarity.
At 49:40 i think option B is correct as temp increase tthe volume also increase so molarity decrease and mam said just opposite words ....i think mam said it by mistake ....plz mention if i m incorrect
Temperature is inversely proportional to volume so when temperature increases volume decrease. And molarity is also inversely proportional to volume so when volume decrease the molarity increase 👍🏻
Mam plz give it a correction 3:01:57 It'll be negative deviation Coz if It's the mixed solution showing more boiling point than either of them Then it'll be clear that VP of a-b will be less than that of b-b or a-a So it'll show a negative deviation instead of +ve deviation
@@randhawaprabh05774 tq🙏🏻..but if we don't let the vapour to escape outside the container..then the volume of water molecules inside container increase
@@soalihy7198 if water gets evaporated then mass of solution will change, so density of solution will also change. I think if nothing is given we should imagine a closed container. Water can't escape but volume increases with increase in temp so b should be the ans. Correct me if I am wrong pls.
a solution of two liquids boil at the temperature more than the boiling point of either of them what type of deviation will be shown from the solution formed in terms of raoult's law Mam is question ka answer option a hoga. 3:02:05
• Introduction • Solute and Solvent • Concentration and Molarity • Molality • Mass/Volume %, Mass/Mass % and Volume/Volume % • Mole fraction • Parts per million and Parts per billion • Vapour Pressure • Raoult’s law of vapour pressure • Deviation from Raoult’s law • Azeotropes • Relative lowering of Vapour Pressure • Henry’s law • Elevation in Boiling point • Depression in freezing point • Van’t hoff factor • Osmotic Pressure • Practice questions.
After vant hoff concept the 3rd question answer is negative deviation... Becoz they are asking boiling will be more for the solution... If vapour pressure is given then positive deviation (V. P is inversely proportional to B.P)guys..plz check
Mam while defining vapour pressure the rate of evaporation curve will be straight line Rate of evaporation remains constant with time This is a small correction mam Thank you mam
Ek kaam karo RUclips channel kholo aur padhana start Karo phir dekhna kitni galtiya hoti hai jab jante ho mam se galti ho gyi to bata ke kya sabit karna chahte ho ki tuk mam se jyada gyani ho
Mam at 3:27:34 option b is also correct as at side where pure solvent is present os in higher concentration compare to solvent present at another side hence during osmosis the solvent moves higher to lower concentration whereas in reverse osmosis solvent moves lower to higher concentration of solvent ....note :- here concentration of solvent is considered not concentration of solution.
Thank you thank you so much mam 🥰☺️🥰☺️🥰🥰🥰🥰☺️☺️☺️🥰🥰☺️☺️🥰☺️☺️☺️☺️ for teaching in English , i don't know there is an English channel in PW , I saw its amazing cls in English mam , it benefits for many members who don't understood Hindi like me ☺️
Hlo Mam, time 49.5 min. I have a doubt because when temperature increases volume also increases, that's why molarity decreases, please check that concept
At 3 hours 1 min ans should be a because if boiling pressure of solution is greater than that of its components then vapour pressure of solution is lower than that of its components so it shows negative deviation.
Mam champions series notes in cbse class 12 batch is not there now mam, maybe removed when deleting class 12 cbse batch , please add champions batch notes as soon as possible mam.
49:37 The answer should be molarity decreases bcoz volume is directly proportional to temperature😄 And Hence molarity is inversely proportional to temperature👩🏫
@@chetna7878 you are right if this process in in a closed container when temp. increases the particles of the solution expand and volume will increases and Molarity will decrease. But in this case when temp. increases the solution will evaporate so volume will decrease and Molarity increase
We have fixed, already calculated molecular masses for all the elements. So here, to calculate the molar mass of NaCl we add the molar mass of Na and Cl that is 23 and 35.5 respectively. You just gotta memorise the mass values to find these
I thought PW was available only in Hindi.... and lately here I found the English channel with 1 L+ subs.... Thank You PW !!
Absolutely
Me too😊 bro
Did mam do numerical s in this video
@@d.tushvitha6347 yes
Lol
3:01:37 Acc to raoult's law, when Ta-b>Ta-a + Tb-b, then Pa-b
Ssss
Ha ss
SSSSSSSSSSSSSSSSS
Thanks for giving such a wonderful lectures which clear my all concepts 😘😘
Hlo
58:19 Shortcut For This Question:
Density= M × Gmw /10 × % = 2.55 × 98 / 10 × 20 = 250/200 = 1.25g/mol
Thank youhh🤍
thanks bro...
😘💋
3:23:18 option B will be not A
2:48:21 answer is option (A) 1.13 g/cm³
Howw
small correction... temperature is directly propotional to volume ..therefore increase in volume will result in decrease of molarity. thankyou for the lecture.
Another question too if boiling point of solition increase than each than its negative deviation
At 3.01.30 s
She said that because it is an aq. solution and increase in temp will vapourise the water and will lead to increase in conc. of solute in the solution and that would lead to increase in molarity.
yup I noticed it too
Yes
At 49:40 i think option B is correct as temp increase tthe volume also increase so molarity decrease and mam said just opposite words ....i think mam said it by mistake ....plz mention if i m incorrect
Yes, you are right, I also thought that at the moment but increase in Temperature will increase the volume and so hence, the molarity will decrease.
You are correct
bro, howw? as temp increases vapourisation takes place and volume decreases,,, so A is right
Temperature is inversely proportional to volume so when temperature increases volume decrease. And molarity is also inversely proportional to volume so when volume decrease the molarity increase 👍🏻
You are correct buddy @detectiveterminators9966
Colligative property depends on the number of solute particles dissolved in the solution.
who else are here in 2024 ..?
Yes
Yeh video kaisa haii
@@TitasChakraborty-rt9vu acha h consistency h pdhna smjh aa jaega
Me ❤❤
2027
Mam in the example of molality the answer is 1585g
Mam plz give it a correction
3:01:57
It'll be negative deviation
Coz if It's the mixed solution showing more boiling point than either of them
Then it'll be clear that VP of a-b will be less than that of b-b or a-a
So it'll show a negative deviation instead of +ve deviation
Ur doctor
More bp , less volatility, a-b is stronger than a-a ,b-b . So yes it is negative deviation
Ma'am, actually temperature is directly proportional to volume, so the ans of first question is B.
@@randhawaprabh05774 tq🙏🏻..but if we don't let the vapour to escape outside the container..then the volume of water molecules inside container increase
Yes you are correct 💯
49:06 Temperature increases so as the volume increases,decreasing molarity.
Volume decrease
How? Volume decrease?@@Danush0007
correct, temperature is directly proportional to the volume
30:14 the ans is 1585 grams /1.585kg of solution
Ya
I Also have another doubt.... 49:14 how temp increase will decrease vol? objects expand when they are heated....?😿🥲
U r right
It's not an metal to expand...it's liquid...when you heat water...water get evaporated and so...volume decreases
@@soalihy7198 oh that's the concept
@@soalihy7198 if water gets evaporated then mass of solution will change, so density of solution will also change.
I think if nothing is given we should imagine a closed container. Water can't escape but volume increases with increase in temp so b should be the ans.
Correct me if I am wrong pls.
@@neetstudies8549 ideal gas equation apply only for gases... Not for solutions... I think so
please check at 49:15 you told that temp. increases then volume will also increases. But this is not true
Mam said only
2:50:09 Vant Hoff factor
Mam 30:22 calculation mistake 1000 + 585 = 1585
Ya😂❤
3:23:35 the answer should be b as 65 is the smallest among them 🤷♀️
Yeah
little fault by mam😴
😅
Yes
𝐘𝐞𝐬
a solution of two liquids boil at the temperature more than the boiling point of either of them what type of deviation will be shown from the solution formed in terms of raoult's law
Mam is question ka answer option a hoga.
3:02:05
Yes, Option a is the correct answer
• Introduction
• Solute and Solvent
• Concentration and Molarity
• Molality
• Mass/Volume %, Mass/Mass % and Volume/Volume %
• Mole fraction
• Parts per million and Parts per billion
• Vapour Pressure
• Raoult’s law of vapour pressure
• Deviation from Raoult’s law
• Azeotropes
• Relative lowering of Vapour Pressure
• Henry’s law
• Elevation in Boiling point
• Depression in freezing point
• Van’t hoff factor
• Osmotic Pressure
• Practice questions.
2:20:35 Colligative property
Tq bro
After vant hoff concept the 3rd question answer is negative deviation... Becoz they are asking boiling will be more for the solution... If vapour pressure is given then positive deviation (V. P is inversely proportional to B.P)guys..plz check
But ma'am Volume is directly proportional to temperature...not inversely!!!
At 3:02:00 the answer is negative deviation
I too thought Da same thing
2:57:49 elevation in BP is ∆Tb=Kb×m. Small correction.
Mam teaches well
30:31 mass of solutions is 1585 g right
57:12 given use this formula for ncert mam density =molarity ×given mass÷10×(w/w)%
Mam you are excellent teaching and also you are the one which teach chemistry in English from physic wallah
Mam while defining vapour pressure the rate of evaporation curve will be straight line
Rate of evaporation remains constant with time
This is a small correction mam
Thank you mam
Ek kaam karo RUclips channel kholo aur padhana start Karo phir dekhna kitni galtiya hoti hai jab jante ho mam se galti ho gyi to bata ke kya sabit karna chahte ho ki tuk mam se jyada gyani ho
Thanks bhai
😂😂
3:23:33 mam why not ch3oh ?? boling point of c6h6 is ch3oh, then the option must be B right @chemistry-vibes Mam !!
s
Mam
According to Gas law,
When temperature increase then volume also increase
PV=nRT
T directly proportional to volume
That is only for ideal gas
Here ure speaking about liquid state
@@mohammedkaif4552 thnx bro , kafi time se doubt tha
Ideal gas equation*
Thank you so much mam this lecture is very helpful in my study.
48:19 Volume increases with increase in temperature so Option B is Correct answer
Ya Answer is b
Yes bro...
@@shivanireddy1697 no volume decreases on increase in temperature and molarity decreases correct answer is A only
49:38 Mam as temperature increase volume also increased (expands) to certain level their after decrease then molarity decrease
Anushka mam thanks for the lecture 🔥 mam 👏.
3:01:53 are iska answer a option he
Mam at 3:27:34 option b is also correct as at side where pure solvent is present os in higher concentration compare to solvent present at another side hence during osmosis the solvent moves higher to lower concentration whereas in reverse osmosis solvent moves lower to higher concentration of solvent ....note :- here concentration of solvent is considered not concentration of solution.
Conc. of solvent will always lower than solution because there is no solute particles in it, conc. increases when solute particles increases
The session was very good👍
All cocepts got clear
Thank u so mich ma'am
Is this lecture is enough for neet
Thank you thank you so much mam 🥰☺️🥰☺️🥰🥰🥰🥰☺️☺️☺️🥰🥰☺️☺️🥰☺️☺️☺️☺️ for teaching in English , i don't know there is an English channel in PW , I saw its amazing cls in English mam , it benefits for many members who don't understood Hindi like me ☺️
Yes, I 'm also 😊
3:01:59 it is negative deviation not positive deviation
If anyone have notes plzz share with me....
@@vishal6282 Check pw app
Batch is not there
@@vishal6282 It's something like cbse class 12 th some batch not jee batch there it will be notes.
This batch notes is upl9aded there
AT 3:23:29 THE CORRECT OPTION IS (B) AS IT HAS 65 DEGREE CELSIUS NOT OPTION (A)85 DEGREE CELSIUS
I think Volume and temp are directly proportional….
Hlo Mam, time 49.5 min. I have a doubt because when temperature increases volume also increases, that's why molarity decreases, please check that concept
No, you are wrong. First check your concept s,..... On heating evaporation will occurrr
Is this enough for NEEt
I think the answer of the first question would be B , molarity will decrease...because volume increases witih temperature
Yeah baby ...
Very nice explanation mam tysm ❤
At 3 hours 1 min ans should be a because if boiling pressure of solution is greater than that of its components then vapour pressure of solution is lower than that of its components so it shows negative deviation.
It means a lot mam. I learned the chapter completely today only 😇😇
In one word , your God to me🙏
Mam champions series notes in cbse class 12 batch is not there now mam, maybe removed when deleting class 12 cbse batch , please add champions batch notes as soon as possible mam.
the board is extra large or maam is short...?
Awesome teaching mam 👌. Very young, yet teaching like very experienced
Heyy.. Is this lecture completely enough for neet???
(3.22) boiling poi inversly proposonal to vapour pressure so...... CH3OH is the currently answer
Yes bro
Queen of physical chemistry 😎
Mam ka favorite chapter isse phale bhi am iiska vieo iss channel pe daal thi cbse term 1 ke liye
49:44 if we increase temperature then volume will increase and as molarity is inversely proportional to volume it decreases
Solutions are done and dusted❤❤
Always and always great teacher 😍
3:23:38 ans should be B)CH3OH
If anyone have notes plzz share with me
Yes
YESS
Hi how are you
Nobody taught me 2/1 is 1 .. except Anusha mam😂😂
😂
😂😂
Yeah also her name is anushka not anusha bro
I'm crazyly listening now the time is 2am
It was a sweeet lecture.
Kyoki humne bahut sugar milai h pani m
East and west anushka mam is the best😍🍫❤️😂......••A••......
3:01:45 correct ans is option is (a)
At 49 minutes 49 second in video mam said wrong because as temparature increase then according to Charles law volume increase hence molarity decrease
temperature increases volume will aslo increase. U are giving wrong information 50:52 . Option B is correct.
Mam start.... S, p, d, f block elements. And rest inorganic soon
30:25 mam the answer is not 1058.5g its 10585g.....🙂
Bro it's 1585 g ur answer is also wrong❌❌
@@ajaygarg749 its 10585 only...
@@artichoudhary4949 Arrey nhi 1000+585=1585 so simple
Ma'am the answer of boiling point question is not C6H6 correct is CH3OH
Is this complete 1shot of class 12th chap solutions?
Relative lowering of vapor pressure of a solution depends on the number of solute particles only or the mole fraction of the solute.
No of solute particles only it is a colligative property
It depends on mole fraction
Is this lecture is sufficient for cracking the neet ?we don't want go in detail or need to study in detail also.
Thanks ma'am for amazing session...❤😊
33:55 Is the Only Word I listen In hindi😅🤫😇 That Is "Chalo"
51:15 option B is right
ma'am batch available hi nahi hai pw par toh notes kaha se milenge
To download Lecture Notes, Visit Champions batch in Batch Section then go respective subject in PW App (bit.ly/3ru9Agh)
@@EnglishPW mam i can't find the batch
Did u find the notes? There's not such batch in the app apparently
Excellent mam..got much satisfied of ur lecture thanks a lots
49:37 The answer should be molarity decreases bcoz volume is directly proportional to temperature😄
And
Hence molarity is inversely proportional to temperature👩🏫
Can you pls tell me where can i found notes of this lecture
If temp. increases volume will decrease and Molarity will increases. So, option A is correct
@@bishwanathlaithangbam but molarity and temperature have inversely relation.. 🤷♀
That's what I have studied in school
@@chetna7878 you are right if this process in in a closed container when temp. increases the particles of the solution expand and volume will increases and Molarity will decrease. But in this case when temp. increases the solution will evaporate so volume will decrease and Molarity increase
@@bishwanathlaithangbam ohhhh!!!
I didn't knew that😅
Thnx for clearing my doubt🤗🤗
Is this session enough for jee
mam your such an awesome teacher , thank you for this amazing class, my doubts are all clarified
Bro is this lecture is enough for neet
Hey how can I find this lecture 's notes in pw app
Just came here to see Anushka ma'am ❤️❤️❤️❤️❤️❤️❤️❤️
Tharki spotted
It was an nice lecture dear mam🙂❤️
pls share notes I'm not able to find this batch on PW app
Thanks for giving me lectures because you are the best teacher of chemistry
Mam the bord or screen is not showing the full writing things
So you want to leave me for this very one thing only! Meanwhile she 21:20 , 1:26:00 giri jaa rhi hain
20 gms of NaOH is present in 100gms of solution. Exampple of m/m%
1:01:00 here 0.1=no.of solute/4
So no. Of solute=0.1×4=0.4 know ma'am??
Mam I need help in knowing path to a location please help me
நன்றி ஆசிரியரே❤️
Va thala va thala
Yaar thala nee
Enna school padikira
Thanks mam really very thx inaa bdia ta Sade teacher v Ni smjhonde g thanks 🥰
Mam plzzz mam cover all the physical chemistry chapter....
53:37 in the question is is given that the solution of sulphuric acid then how can be it be the solute ma'am
Man can you please make a video on surface chemistry
It's a very amazing lecture❤
And question answer is (a)
Is it sufficient for neet??
Isse hua kya NEET?😬
Somebody please help how did maam calculate molar mass of NaCl at 23:54
We have fixed, already calculated molecular masses for all the elements. So here, to calculate the molar mass of NaCl we add the molar mass of Na and Cl that is 23 and 35.5 respectively. You just gotta memorise the mass values to find these
1000+585 = 1585 not 1058.5
Mam's aap ekdam Meri gf ki tarh dikhati ho es liye ham chemistry aap se hi padhate hai ❤❤❤❤❤❤❤❤