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

Posted by Tannya Pande 7 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Nikita Gupta 7 years, 6 months ago

Ideal solution follow Raoult's law at all concentrations. So no new interaction is developed in solution after mixing hence no change of enthalpy and volume is observed in solution. But, in case of mixing of chloroform and acetone, there is new force of attraction develop between the acetone and chloroform molecule. There is formation of a hydrogen bond between the hydrogen of CHCl3 and oxygen atom of CH3-CO-CH3 . Hence the intermolecular interaction between chloroform and acetone is stronger than the intermolecular interactions of chloroform-chloroform and acetone -acetone molecules. This give rise to change in enthalpy and volume of solution after mixing. So, mixing of chloroform and acetone does not give ideal solution.

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Devraj Pahariya 7 years, 6 months ago

They show deviation

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50% of a reaction is complete in 16 minute. what fraction of the reaction would occur in32 minute?

Posted by Nisha Ahamed 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is ionization enthalpy?

Posted by Chumki Papay 7 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Nikita Gupta 7 years, 6 months ago

I think friends the most appropriate one is that Ionization enthalpy is the minimum amount of energy required to remove a valence electron from the ground state of an atom

0Thank You

Niharika Srivastav 7 years, 6 months ago

Amount of energy required to remove the outermost electron is called ionization enthalpy.

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Tannya Pande 7 years, 6 months ago

It is defined as the amount of energy required to remove the most loosely bound electron , the valence electron to form a action .

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Why is water is liquid and sulphur hydroxide is gas

Posted by Gilbert Roy 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Awanish Kumar 7 years, 6 months ago

It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant. Sulfur dioxide is a colorless gas with a pungent odor. It is a liquid when under pressure, and it dissolves in water very easily.

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Stearic hindrance

Posted by Deepam Yadav Deepam Yadav 5 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Nikita Gupta 7 years, 6 months ago

The SN2 reaction requires approach of the nucleophile to the carbon bearing the leaving group the presence of bulky substituent on or near the carbon hinders the attack of nucleophile and therefore slows the reaction this interference of the bulky groups with a reaction is called Steric Hindrance

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Devraj Pahariya 7 years, 6 months ago

Protecting umbrella

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Deepam Yadav Deepam Yadav 7 years, 6 months ago

Define Stearic hindrance

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How to find coordinatuon number of fcc?

Posted by Sangamithra B Manohar 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Anubhav Thakur 7 years, 6 months ago

1/8 × 8 + 1/2 × 6

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What is the mole ratio of benzene(p°B=150 torr) and toluene(p°T=50 torr)in vapour phase if the given solution has a vapour pressure of 120 torr

Posted by Anshika Singla 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is science

Posted by Chumki Papay 7 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Parul Maiya 7 years, 6 months ago

It is a fractual knowledge

1Thank You

Chumki Papay 7 years, 6 months ago

Property in chemical property of nitrogen

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Ankit Dhakad 7 years, 6 months ago

All these which exist in nature and knowing about it, is known as science.

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nitrogen physical property

Posted by Ranjit Dey 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

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Determine the value of vantt hoff's factor when pottasium ferrocyanide dissociates by 50 %

Posted by Riya Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Determine the value of vant hoff's factor when pottassium frttocyanide dissociates by 50%

Posted by Riya Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Metallic gold crystallizes in the face centred cubic lattice.what is the approximate no. of unit cells in 2.0 g of gold ? atomic mass of gold is 197.

Posted by Suman Suman 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sonu Kumar 7 years, 6 months ago

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What is anisotropic or isotropic

Posted by Anshika Pandey 7 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Aryan Hari 7 years, 6 months ago

Anisotropic are the substance in which physical property change in solid formation at 3d position and isotropic are the substance in which physical property don't change in solid formation at 3d position

2Thank You

Kartikey Srivastava 7 years, 6 months ago

When we measure any physical quantity of a solid in different direction we will get a different value form each direction,it is called anisotropic.,and When we measure any physical quantity of a solid in different direction we get same value form all direction,it is called isotropic

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Suman Suman 7 years, 6 months ago

( of an object or substance ) having a physical property which has the same value when measured in same directions.

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Ethanoic acid into metanamine

Posted by Alka Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is stoichiometry

Posted by Mahendrajeet Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Aryan Hari 7 years, 6 months ago

The no. Of cation and anion are in the same ratio at they are present in regular unit cell formula

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Ankit Singh 7 years, 6 months ago

The imperfection in the crystal such that the ratio of cation and anion are remind same . as represented by the molecular formula and generally called intransic defect

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Posted by Kuldeep Saithiya 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What are monochloro derivative ???

Posted by Sara Aijaz 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why adsorption always exothermic

Posted by Abhishek Kumar 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Devraj Pahariya 7 years, 6 months ago

Because there is always loss of heat in adsorption

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what happens when CO2 gas is passed through lime water and why does it disappear on passing excess CO2?

Posted by Tom Jerry 7 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Tannu Bhardwaj 7 years, 6 months ago

Ca (oH)2 + co2 --> caco3 + H2o

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Devraj Pahariya 7 years, 6 months ago

Lime water turn milky

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Can 1 M FeSO4 be stored in Ni vessel? Why?

Posted by Nikita Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Nikita Gupta 7 years, 6 months ago

Yes...Find out its E°cell ...it will be negative that shows that it is non spontaneous hence...

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Which will adsorb more gas a lump of charcoal or its powder and why

Posted by Manjeet Saini 7 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Ashwani Singh 7 years, 6 months ago

It's powder

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Devraj Pahariya 7 years, 6 months ago

Powder due to large surface area

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How many lattice points are there in fcc bcc simple cubic and face centered tetragonal unit cell

Posted by Pankaj Kumar 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Àñshul Shärmã 7 years, 6 months ago

fcc-14 bcc-9 face centerd tetrgonal unit cell-14

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What is the structure of phenyl and tolune?

Posted by Abhishek Dwibedy 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Hari Haran 7 years, 6 months ago

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Crystalline solid definition and features

Posted by Deepak Chouhan 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Aryan Hari 7 years, 6 months ago

Crystalline are the substance in which there are arrange in regular geometry they have long and short range they have high and sharp melting they have fixed shape and structured they are anisotropic in nature because there is solid formation and physical properties change in 3d position

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Full form of phbv and the polymer which is also known as synthetic rubber

Posted by Ashutosh Kumar 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Àñshul Shärmã 7 years, 6 months ago

Poly(3-hydroxybutyrate-co3hydroxyvalerate) commonly known as phbv is a polyhydroxyalkanoate type polymer it is biodegradable,non toxic, biocompatible plastic produced naturally by bacteria and good alternative for many Non Biodegradable synthetic polymers

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State and define columbs law.

Posted by Noor Azam 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Deepika Sharma 7 years, 6 months ago

According to this law, electrostatic force bten two stationery point charges is directly proportional to product of magnitude of charges and inversely propotional to square distance btwn them. F=K q1^q2/r^r Whees k= electrostatic force constant.

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How l.get higher marks

Posted by Ankit Dhakrey 7 years, 6 months ago

CBSE > Class 12 > Chemistry