CBSE > Class 12 > Chemistry | CBSE Board | Homework Help

SN1- is nucleophilic substitution unimolecular Formation of carbonation Reactivity order 3°>2°>1° Sn2 - bimolecular Reactivity order 1°>2°>3°. Due to stearic hinderence

1Thank You

Deepak Sharma 8 years, 2 months ago

Two steps involve in sn1 reaction but sn2 complete in one step

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ANSWER

If we react the sodium with water what happened ?

Posted by Monosheel Ravi 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Saksham Sawarna 8 years, 2 months ago

A colourless solution is formed consisting of strongly alkalic sodium hydroxide and hydrogen gas

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ANSWER

Preparation of alcohol by hydroboration oxidation method .... Explain it..

Posted by Rishika Jhariya 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Mansi Kaushal 8 years, 2 months ago

In this case addition of water occurs according to Anti Markonikov ' s rule without rearrangement. CH3- CH = CH2 + B2H6 ➡CH3- CH2- CH2 - OH It occurs in presence of THF and H2O2/OH-

1Thank You

Shivam Singh 8 years, 2 months ago

It is given on page 322 of ncert 2part

2Thank You

ANSWER

Mechenism of reaction of alkoha and PCl5

Posted by Kumar Bharat 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Arrange acc to decr. Order of bond angle A) SF6 B) CCL4 C) H2O D) SF6

Posted by Aniket Garg 8 years, 2 months ago

CBSE > Class 12 > Chemistry

20 answers

Aniket Garg 8 years, 2 months ago

Hiii Are you not now online

0Thank You

Saksham Sawarna 8 years, 2 months ago

If u want u can consult me on grade up app...Over there u can post images also... So we can discuss over there...

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Saksham Sawarna 8 years, 2 months ago

I think I haven't seen my id since the past two months....

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Saksham Sawarna 8 years, 2 months ago

Sry dear....Not posible cuz I have restricted myself from all these things

0Thank You

Aniket Garg 8 years, 2 months ago

Then we can discuss on gmail You have email ID

1Thank You

Aniket Garg 8 years, 2 months ago

1Thank You

Saksham Sawarna 8 years, 2 months ago

By god aniket I am not on fb...Otherwise I would have given it to u the first day only... And I don't have problem in discussing answer wid u but being active on it and not answering my friends is a bit difficult for me..... And I also have the same problem wid this app... I hope u understand... Suggest any other way of discussion....

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Aniket Garg 8 years, 2 months ago

If you are agree then only. I am not forcing you

1Thank You

Aniket Garg 8 years, 2 months ago

No... I want to discuss swastika with you. And I can not solve it here because in this app there is no facilitie about add image of solñ So I want to say that can we solve in fb

1Thank You

Saksham Sawarna 8 years, 2 months ago

Or u are talking about smone else???

0Thank You

Saksham Sawarna 8 years, 2 months ago

Wid me???? Why?????

0Thank You

Aniket Garg 8 years, 2 months ago

With yu

1Thank You

Aniket Garg 8 years, 2 months ago

Hey I want to solve physics and chemistry numerical.

2Thank You

Saksham Sawarna 8 years, 2 months ago

Ok then it might be correct....

1Thank You

Aniket Garg 8 years, 2 months ago

H2O has 2 lone pairs Acc. to vsepr theory LP-LP Max repulsion and hence angle reduce to 104.5°

1Thank You

Saksham Sawarna 8 years, 2 months ago

No H2O = 109.5 and NH3= 107 u can also check this by its structure....

1Thank You

Aniket Garg 8 years, 2 months ago

NH3>H2O NH3= 107.5 H20= 104.5

2Thank You

Saksham Sawarna 8 years, 2 months ago

CCL4 has highest while sf6 has lowest bond angle

1Thank You

Saksham Sawarna 8 years, 2 months ago

B)CCL4. C)H20. D)NH3. A)SF6

1Thank You

Saksham Sawarna 8 years, 2 months ago

A and D are same????

0Thank You

ANSWER

Z is equal to 2 what type of cell

Posted by Tushar Panwat 8 years, 2 months ago

CBSE > Class 12 > Chemistry

4 answers

Pushkar Goyal 8 years, 2 months ago

Bodyvcentered cubic unit cell

0Thank You

Deepak Sharma 8 years, 2 months ago

Bcc (body centered cubic unit cell)1/8+1 of body center =2

0Thank You

Aniket Garg 8 years, 2 months ago

1/8*8+1=2

1Thank You

Aniket Garg 8 years, 2 months ago

Bcc

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ANSWER

Sulphuric acid is not used in reaction of alcohol with KI. Why..?

Posted by Aman Kumar 8 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Mansi Kaushal 8 years, 2 months ago

It will oxidizer I negative to I2

0Thank You

Aniket Garg 8 years, 2 months ago

It react with alcohol to form alkene By showing B- elimination

1Thank You

Amar Kumar 8 years, 2 months ago

In the presence of sulphuric acid (H₂SO₄), KI produces HI as

2KI + H₂SO₄ → 2KHSO₄ + 2HI

Since H₂SO₄ is an oxidizing agent, it oxidizes HI (produced in the reaction to I₂).

2HI + H₂SO₄→ I₂ + SO₂+ H₂O

As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI. Instead, a non-oxidizing acid such as H₃PO₄ is used.

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ANSWER

Write the mechanism of the following reaction ethane to CH3-CH2plus plusH2O

Posted by Kauvery Singh 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Aniket Garg 8 years, 2 months ago

Question is wrong

1Thank You

ANSWER

what is adsorption isotherm

Posted by Saksham Sharma 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is f center

Posted by Shahrukh Khan 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Mansi Kaushal 8 years, 2 months ago

Responsible for coloration

0Thank You

Rajit Das 8 years, 2 months ago

it's the position in the crystal lattice frm where the anions are substituted by the electrons in a metal excess defect.

2Thank You

ANSWER

Colour in coordination complexes

Posted by Adity Singha 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Chanchal Bansal 8 years, 2 months ago

due to d-d transition of unpaired electrons

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ANSWER

Why is common salt used to clear the snow off the road?

Posted by Prachi Srivastava 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Aniket Garg 8 years, 2 months ago

As you know if we add any solute and freezing pt of solñ decreases and ice melts

2Thank You

Nitya Chugh 8 years, 2 months ago

Common salt i.e. NaCl is used to clear the snow off the road bcz it has a freezing point of 801℃ and on mixing with ice or snow it lowers thw freezing point of mixture to -21℃ and the temperature in surrounding is above it .and therefore ice or snow keep on melting or we can say doesn't get freezed.

2Thank You

ANSWER

How will prepare 1. HBr from NaBr 2. SO2 from H2SO4 3. XeO3 from XeF6

Posted by Prachi Srivastava 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is geminal halide?

Posted by Prathamesh Khadge 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Neha Garg 8 years, 2 months ago

When halogen group is present on same carbon atom it is called as geminal halide

1Thank You

ANSWER

What happens when anisole is treated with the mixture of conc.sulphuric acid and nitric acid

Posted by Ashish Kumar 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Aniket Garg 8 years, 2 months ago

As anisole is o-p director C6H5--oCH3 a) add SO3H AT ORTHO AND PARA B) ADD NO2 at ortho and para

3Thank You

Neha Garg 8 years, 2 months ago

Actually when phenol is treated with mixture of conc. sulphuric acid and nitric acid i.e. nitrating mixture then 2,4,6-trinitrophenol forms but nothing with anisol

1Thank You

ANSWER

why the Fe loss +2 and +3 ions?

Posted by Kuldeep Siwach 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the hybridisation of XeOF2 and XeO2F2 and why?

Posted by Shailja Shukla 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Nitya Chugh 8 years, 2 months ago

Both are sp3 hybridized

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ANSWER

Lyophilic sols are

Posted by Md Ehtesham Ansari 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Ashish Kumar 8 years, 2 months ago

Not stable

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ANSWER

Difference between rate of reaction and order of reaction

Posted by Mohit Khatri 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is inductive effect

Posted by Khushi Dubey 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Aniket Garg 8 years, 2 months ago

It is effect of a group which is of 2 type A) + I which are e withdrawn ing group B) - I which are e donating group

1Thank You

Nitya Chugh 8 years, 2 months ago

It is a permanent effect in which sigma electrons permanently gets displaced bcz of difference in electronegativity

1Thank You

ANSWER

Why (+-) 2butanol is optically inactive

Posted by Lalit Patidar 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Ashu King 8 years, 2 months ago

Because it is a mixture of two enantiomers in equal proportion. ?

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ANSWER

Convert phenol into salicylic acid

Posted by Souvik Panda 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Dr. Kamlapati Bhatt 8 years, 2 months ago

0Thank You

Ashish Kumar 8 years, 2 months ago

At first phenol is treated with NaoH then with co2 then with sodalime

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ANSWER

What is the mechanism of formation of quinone from phenol

Posted by Prawal Pratap 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Bhavani K 8 years, 2 months ago

Oxidation of phenol gives quinone

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ANSWER

Can you explain why is bimolecular dehydration not appropriate for the preparation of ethyl methyl ether

Posted by Shivam Singh 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why vitamin C cannot be stored in body

Posted by Abhishek Singh Rana 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Neha Garg 8 years, 2 months ago

Vitamin C can'nt be stored due to its water soluble nature. It is soluble in water and that's why come out of body through urine

1Thank You

ANSWER

Why vitamin c cant be stored in our body??

Posted by Viditya Kumar 8 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Mansi Kaushal 8 years, 2 months ago

Bcz it's highly water soluble and is excreted through urine

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ANSWER

question 5 of intex cbse ncert haloalkane chapter

Posted by Pranjal Srivastava 8 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

I just want to know how we solve the conversation in chemistry. And also the essential things I have to learn for conversations.

Posted by Om Kumar 8 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Mansi Kaushal 8 years, 2 months ago

?hope it helps..

0Thank You

Mansi Kaushal 8 years, 2 months ago

Firstly we should be aware about the structural formula of reactant and product then we should know the basic things we need to add, eliminate or substitute and what we require for that.. Basically we can learn the conditions required to induce that thing

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ANSWER

Find the boiling point of a solution containing 0.520g of glucose dissolved in80.2g of water. Give

Posted by Prince Tanwer 8 years, 2 months ago

CBSE > Class 12 > Chemistry