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Difference between homogeneous mixture and heterogeneous mixture?

Posted by Aryujardhan Singh 2 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 4 months ago

HOMOGENOUS MIXTURES = The components of such mixtures are evenly distributed across the volume of the mixture. As no boundary of separation exist between these components, they can't be separated by simple physical methods. HETEROGENOUS MIXTURES = These mixtures actually have a concrete boundary of separation between it's components and are not so evenly distributed. They can be separated physically.

ANSWER

What do the terms positive and negative refers to?

Posted by Ruhana Parvin 2 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Suraj Kumar 2 years, 4 months ago

Homogenous mixture = it's means composition and property are uniform throughout the mixture Example = acid + water Common examples = lemon water Heterogeneous mixture = it's means composition and property are non uniform thorougout the mixture Common example = sand + water

Jaspreet Kaur 2 years, 4 months ago

In the simplest sense positive means good or the opposite of negative .if you have a positive attitude about homework, for example , you are more likely to get positive feedback on your report card.

ANSWER

Henry's law depend upon?

Posted by Daya Au 2 years, 4 months ago

CBSE > Class 12 > Chemistry

5 answers

Shreya Sinha 2 years, 3 months ago

Temperature and nature of gas

Suraj Kumar 2 years, 4 months ago

Henry's law depends = temperatures, nature of liquid

Mannat Thukral 2 years, 4 months ago

It is dependent on mole fraction and partial pressure of the liquid liquid mixture

Piyush Kumar Piyush Kumar 2 years, 4 months ago

Partial Pressure of gas

Anjan Karthi 2 years, 4 months ago

Persistent temperature and enthalpy conditions. Even the reaction underlying the dissolution.

ANSWER

Why leanne is storing aspirin for medical use?Is her this act correct?Give reason

Posted by Praveen Prem 2 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 4 months ago

Aspirin is a good antipyretic and requires to be stored under low temperatures (preferably 273K - 278K). It is also found to have analgesic properties and unlike other aromatic compounds, it is not mostly carcinogenic (reduced risk to cancer). Thus, her act is definitely correct considering her intentions.

ANSWER

A mixture of chlorobenzene & bromobenzene is nearly an ideal solution but a mixture of chloroform & acetone is not. explain?

Posted by Ruhana Parvin 2 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 4 months ago

In chloroform and acetone mixture, the double bonded oxygen of acetones get hydrogen bonded with the hydrogen of chloroform. Thus, there is a significant change in the strength of bonding in chloroform - acetone mixtures, than in individual chloroform and acetone solutions. Thus, vapour pressure also changes during dissolution and consequently, the solution does not follow Raoul's law for ideal solutions.

ANSWER

Ch 4 chemical kinetics differentiated graph

Posted by Shrayansh Jain 2 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How to study

Posted by Khushi Joshi 2 years, 4 months ago

CBSE > Class 12 > Chemistry

5 answers

Parush Chaudhary 2 years, 4 months ago

🤔😊🫡

Sunanda Nandu 2 years, 4 months ago

First have the thought of studying from heart

Official King 2 years, 4 months ago

Ye toh nhi pta yrr

Aseem Mahajan 2 years, 4 months ago

<font face ="Times New Roman">As you did in past 13 years

Account Deleted 2 years, 4 months ago

from your books 📚

ANSWER

Why delta TB of aq solution of Nacl is nearly twice to that 1m aq solution of glucose

Posted by Ankit. Kishor 2 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Anjan Karthi 2 years, 4 months ago

Hope this was useful !!!!

Anjan Karthi 2 years, 4 months ago

In aqueous solution, there is a very prominent possibility (which is 100%, theoretically) that NaCl may dissociate into Na+ and Cl- ions. So, since it is the number of particles of the solute in the solvent that tends to cause an elevation in the BP of the latter, NaCl an ionisable solute (with its two constituent ions) can produce double the impact (∆Tb) than in the case of glucose (a non ionisable organic solute).

ANSWER

Molarity formula

Posted by Abhinav 1 2 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Bhagya Begani 2 years, 4 months ago

Molarity =Number of mole of solute/vol.of solution

Aseem Mahajan 2 years, 4 months ago

$$\rm Molarity = \dfrac{Number \ of \ moles \ of \ solute}{Volume \ of \ solution m (in \ L)}$$

Abhinav 1 2 years, 4 months ago

Molarity = no of moles of soute/ volume of solution

ANSWER

Koi chemistry k liye yt channel suggest krdo:)

Posted by Anya :) 2 years, 4 months ago

CBSE > Class 12 > Chemistry

5 answers

Aseem Mahajan 2 years, 4 months ago

<font face ="Times New Roman">So many jaiswal i hope the one I know isn't here

Tiya Jaiswal 2 years, 4 months ago

I suggested learnohub....by Roshani maàm ....She is multitalented.... She tought all the subjects of science and tought very well. Her explanation is very good. Please go through learnohub channel and watch her video....i hope it's useful for you...🤗

Account Deleted 2 years, 4 months ago

You are totally right that ncert is important but it's not easy for everyone to understand ncert sometimes in some concepts we get stuck so for that yt help us to clear our concepts.....and ya Monica bedi ma'am and sudhanshu sir are currently teaching for competitive exams (you can still refer them if your concepts are weak )...... remaining teachers also teaches for boards .....teachers of pw are good i don't know why you are saying this ..

Aseem Mahajan 2 years, 4 months ago

<font face ="Times New Roman">PW is cartoon and every other are needed for competitive level
For cbse , you just and just need ncert. Remember all the examples and exercise question are a part of chapter means you will learn something new in them don't get demotivated if you can't solve them correctly take them as a part of new concept

Account Deleted 2 years, 4 months ago

For physical chemistry - shudhanshu sir (pw)
For organic chem -pankaj sir (pw) or Monica bedi ma'am (uncademy )
for inorganic chemistry - refer old videos of apni kaksha .

ANSWER

45 g ethylene glycol is mixed with 600g of water. Calculate the freezing point depression and fleazing point of solution

Posted by Anish Gupta 2 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Aseem Mahajan 2 years, 5 months ago

<font face ="Times New Roman">Use straight formula I still remember

ANSWER

State the main advantage of molality over molarity as the unit of concentration?

Posted by Ruhana Parvin 2 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Anjan Karthi 2 years, 4 months ago

Molality changes negligibly (or, rather say never changes) with temperature variations unlike molarity (Volume depends on temperature).

Shek Sahith Hassan 2 years, 5 months ago

Hi

ANSWER

Why is molality and mole fraction preferred over molarity

Posted by Umang Choraria 2 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 4 months ago

Molality and mole fraction changes negligibly (or, rather say never changes) with temperature variations unlike molarity (Volume depends on temperature). Hope you found it useful and this is what you needed !!!!

ANSWER

Why does glucose dissolve in water but not in benzene?

Posted by Ruhana Parvin 2 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Aryan Sarova 2 years, 2 months ago

Due to hydrogen bonding between glucose and water

Umang Choraria 2 years, 5 months ago

Because glucose is a polar compound and benzene is a non polar compound thus glucose dissolves in water and not in benzene

ANSWER

2020 wale koi friends h yha pe 🥺 ?

Posted by ❤️Ritesh Gupta? 2 years, 5 months ago

CBSE > Class 12 > Chemistry

5 answers

Aseem Mahajan 2 years, 5 months ago

<font face ="Times New Roman">Don't listen to those saying your enemies are growing up they ignored me and don't even care even a cent of their so called "friends" presence right after 2020

Account Deleted 2 years, 5 months ago

No they are still in 2020 but I think your enemies are growing up with you because they are here

Shashwat Shukla 2 years, 5 months ago

Ha bhai mai hu ham badnaseeb 2020 wale yhi h aaj bhi

Cherry Jaat 2 years, 5 months ago

Hi

Aseem Mahajan 2 years, 5 months ago

<font face ="Times New Roman">Not friends but enemies yes

ANSWER

2.5 g of ethanoic acid is dissolved in 75g of benzene. Calculate molality of solution.

Posted by Gunjan Sharma 12Th 2 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 4 months ago

m = Wb × 1000 / Wa × Mb = 2.5 × 1000 / 60 × 75 = 2500 / 4500 = 0.55 mol/kg

ANSWER

What is solute and solvent in crystalline blue vitriol

Posted by Shivansh Singh 2 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Abhilanshu Vittolia 2 years, 5 months ago

Ref

ANSWER

What are the application of Henry's law

Posted by Meequat Fatima 2 years, 5 months ago

CBSE > Class 12 > Chemistry

5 answers

Sani Jain 2 years, 3 months ago

co2 is filled in cold drinks at high temperature aquatic life is more comfortable in cold water then warm water Low concentration of oxygen in blood of people living at high altitudes possesses low blood oxygen which makes them weak and also they cannot think properly and this condition is known as anoxia Tank of scuba divers is diluted with helium to avoid the problem of bends which is generated due to formation of bubbles of nitrogen in blood

Shaheen Rabbani 2 years, 5 months ago

1. To avoid bends 2. To increase the pressure of co2 in soft drinks 3. At high altitudes the pressure of gas is low causes anoxia

Shivansh Singh 2 years, 5 months ago

Main application is in the function of lungs

Shivansh Singh 2 years, 5 months ago

In deep sea diving ,

Shivansh Singh 2 years, 5 months ago

CO2 ka solubility increase krne ke liye

ANSWER

A 4gm nvs solute is dissolved in 250gm of water ,the depression in freezing of water is observed 0.087 what is the molecular weight of solute ( kf for water = 1.86)

Posted by Akshit Kumar 2 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 4 months ago

∆ Tf = Kf m = Kf [Wb × 1000 / Mb × Wa] where Mb is the molecular weight of solute.

ANSWER

Write the product formed when p- nitrochlorobenzene is heated with aq. NAOH at 443k followed by Acidification

Posted by No Thanks 2 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Anjan Karthi 2 years, 4 months ago

p-nitrophenol.

Madhav Sharma 2 years, 5 months ago

Sorry I don't know

ANSWER

What is solute

Posted by Menka Goswami 2 years, 5 months ago

CBSE > Class 12 > Chemistry

3 answers

Aryan Sarova 2 years, 2 months ago

Which is present in less quantity in solution

Shivansh Singh 2 years, 5 months ago

A solute is substance which get dissolved in solvent to make a solution

Aabid Hussain 2 years, 5 months ago

A substance that is dissolved in a solution called solute

ANSWER

What is the latest syllabus of chemistry Deleted chapters 2023-24

Posted by Gangana Pandey 2 years, 5 months ago

CBSE > Class 12 > Chemistry

2 answers

Gangana Pandey 2 years, 5 months ago

That's only I am asking bro

Amudha Poomanian 2 years, 5 months ago

What is the deleted por

ANSWER

Prpose mechanism of 2N2O5 gives 4 moles of nitrogen dioxide nd oxygen gas

Posted by Gagan Chhabra 2 years, 5 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Write the iupac name 1..(Ccl3)3 Ccl

Posted by Tannu Pal 2 years, 5 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 5 months ago

1,2,2,2 - tetrachloro - 1,1 - bis (trichloromethyl) ethane.

ANSWER

Total number of atoms of all element present in one mole of ammonium dichromate is

Posted by Aman Soni 2 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Preeti Dabral 2 years, 6 months ago

One molecule of ammonium dichromate,{tex}\left(\mathrm{NH}_4\right)_2 \mathrm{Cr}_2 \mathrm{O}_7{/tex}

contains 19 atoms.

Thus, one mole of ammonium dichromate will contain 19×6.02×10²³=114×10²³ atoms.

Shivansh Singh 2 years, 5 months ago

(nh4)2cr2o7 = (4+1)*2+2+7=19atoms , So that for one mole = 19*avagadro no. 19*6.023*10^23=114*10^23

Iva Jain 2 years, 6 months ago

One molecule of ammonium dichromate, contains 19 atoms. Thus, one mole of ammonium dichromate will contain 19×6.02×1023=114×1023 atoms.

ANSWER

Examples of alkyl halide

Posted by 💪🏻 Ayush Rai 💪🏻 2 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Anuja Ajagekar 2 years, 6 months ago

Chloromethane

ANSWER

Write three difference between "order of reaction" and "molecularity of reaction".

Posted by Ashifa Sayyed 2 years, 6 months ago

CBSE > Class 12 > Chemistry

4 answers

Anshika Tiwari 2 years, 6 months ago

Molecularity value is never zero but in order of reaction zero value is possible

Anshika Tiwari 2 years, 6 months ago

Molecularity is always a whole number but in order of reaction... fraction value is also possible

Anshika Tiwari 2 years, 6 months ago

Molecularity is theoretical concepts and order of reaction is experiment concept....

Muskan Garg 2 years, 6 months ago

Molecularity is the total number of atoms or molecules reacting but order of reaction is the power raise to the concentration of the reactants in rate expression.

ANSWER

Bana +

Posted by Nadeem Qureshi 2 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Formula for chlorobenzene

Posted by Lokina Siva 2 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Fool Boy 2 years, 3 months ago

C6h5cl

Anshika Tiwari 2 years, 6 months ago

C6H5Cl

Anjan Karthi 2 years, 6 months ago

C6H5Cl

ANSWER

Assertion (A):chlorobenzene is resistant to electrophilic substitution reaction ,Reason (R) : C-Cl bond in chlorobenzene acquires partial double bond characters due to resonance

Posted by Parth Sri.. 2 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Anjan Karthi 2 years, 6 months ago

A is false but R is true actually. Check resonance structures of chlorobenzene, 3 out of 5 structures indicate the partial double bond character of C Cl bond.

Jatin Rana 2 years, 6 months ago

A is wrong and R is also wrong Bcoz chlorobenzene is undergoes electrophilic substitution rection it doesn't resist it

ANSWER

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