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

When chloroform is added to acetone there are new forces of attraction due to hydrogen bonding between acetone and chloroform. ΔHmix is negtive because energy is released due to increase in the attractive forces, therefore dissolution is the exothermic process . hence temperature is increases.

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the reaction of an alkene X with bromine produces a compound by which has 22.22% carbon 3.71 percent hydrogen and 74.07% bromine the ozonolysis of alkene X gives only one product the alkene X is

Posted by Sahil Yadav 6 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Deeya Singh 6 years, 1 month ago

The alkene X is CH3-CH=CH-CH3.

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How to make project file which topic includes in it?

Posted by Aanchal Kishor 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

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What is chiral and chilate ligands

Posted by Dev Chaubey 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Anchal Maurya 6 years, 1 month ago

C having different groups attached with carbon atom then that carbon will be chiral / the object which are non-superimposable on their mirror image is known as chiral

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How did johnny sins became so successful that he has many jobs

Posted by Aryan Dabas 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Aditya Jha 6 years, 1 month ago

???

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Dr.Niraj Kumar 6 years, 2 months ago

????

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In which state does sodium potassium not conduct electricity

Posted by Ashok Chaurasia 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Deeya Singh 6 years, 2 months ago

Sodium and potassium can conduct electricity in all states, even in solid because they are metals.

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Bharat Koranga 6 years, 2 months ago

Solid

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All the name reaction in class 12th

Posted by Harry Club 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

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Hiii... let's talk

Posted by Bindal Ayush 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Avinash Kumar 6 years, 2 months ago

Jhopadi ke pdh le

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Shreyas Neelamahadev 6 years, 2 months ago

Hear not to talk only reading purpose..?

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What is arenes

Posted by Chhotelal Sharma 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Aanchal Kishor 6 years, 2 months ago

Those compound which have ring commonly we can say that benzene means aromatic hydrocarbons are called arenes

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Deeya Singh 6 years, 2 months ago

Aromatic hydrocarbons are known as arenes.

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How do you convert propanone to propene

Posted by Aakash Verma 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Son Sammy 6 years, 2 months ago

First do reduction of propanone so u get sec. Alcohol then by dehydration u get propene

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How do you convert phenol to anisol

Posted by Aman Gupta 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Son Sammy 6 years, 2 months ago

First react phenol with NaOH then with CH3Br u get anisol

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(2) How much electricity in terms of Faraday is required to carry out the reduction of one mole of PbO2?

Posted by Pankaj Ghugherwal 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Deeya Singh 6 years, 2 months ago

4 Faradays

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On which topic we have to make the project

Posted by Prashant Rai 6 years, 2 months ago

CBSE > Class 12 > Chemistry

0 answers

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Predict the shape of clf4+ and IF4-

Posted by Sardaar Saab 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Prashant Rai 6 years, 2 months ago

Square pyramidal and octahedral

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All tha name reactions of organic chemistry

Posted by Bishap Rajwar 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Parmod Kumar 6 years, 2 months ago

See the aman dhatarwal on youtube chemistry portion

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Shape of xenon haxa flouride

Posted by Archasasankan Sasankan 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Gursharn Kaur 6 years, 2 months ago

Pentagonal bipyranidal with sp3 d3 hybridization

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Řøhăň Řąjpůť ✌️✊ 6 years, 2 months ago

distorted octahedral

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Actylation of aniline

Posted by Chirag Bisht 6 years, 2 months ago

CBSE > Class 12 > Chemistry

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What type of isomerism is exhibited by the complex [ Co( NH^3)^5 NO^2] ^+2

Posted by Jasmine Jasmine 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Deeya Singh 6 years, 2 months ago

It should be Linkage Isomerism, according to me.

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What substitution in molecule can make it stronger or weaker acid

Posted by Sanskriti Sah 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Deeya Singh 6 years, 2 months ago

In an organic molecule, if we substitute electron withdrawing group, it becomes a stronger acid. If we substitute electron donating group, it becomes a weaker acid.

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Is the chapter amines in the syllabus for cbse 2020

Posted by Dr.Niraj Kumar 6 years, 2 months ago

CBSE > Class 12 > Chemistry

6 answers

Sejal Uniyal 6 years, 2 months ago

Yes

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Aanchal Kishor 6 years, 2 months ago

Yes

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Sanskar Ghyar 6 years, 2 months ago

Yupp...

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Navneet . 6 years, 2 months ago

Yes

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Ã♥╣[-_-]╠♥J ??? 6 years, 2 months ago

Yes

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Durgesh Sharma 6 years, 2 months ago

Yes

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Is CrO3 a strong oxidising agent or weak oxidising agent? And what about ACIDIFIED CrO3?

Posted by Deeya Singh 6 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Aanchal Kishor 6 years, 2 months ago

It is a strong oxidising agent . Acidified cro3 is increased more its power of oxidising

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Shreya Dixit 6 years, 2 months ago

Strong oxidizing agent Acidified is more powerful because it's convert the compound into more oxiginated compound

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Sanskar Ghyar 6 years, 2 months ago

strong o.a. in acidic medium and weak o.a. in alkaline medium

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Haloalkanes react with KCN ti form alkylcyanide while AGCL form isocyanides

Posted by Saijal Dharai 6 years, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Aanchal Kishor 6 years, 2 months ago

Because KCN is ionic bonding and AgCN is covalent bonding in KCN after reaction with haloalkanes C has free electron to bonding with other but in AgCN N has electron to bonding.so haloalkanes reacts with kcn to form cyanide and withAgCN isocyanide

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Deeya Singh 6 years, 2 months ago

KCN is predominantly ionic and provides cyanide ions in solution. Although both carbon and nitrogen atoms are in a position to donate electron pairs, the attack takes place mainly through carbon atom and not through nitrogen atom since C—C bond is more stable than C—N bond. However, AgCN is mainly covalent in nature and nitrogen is free to donate electron pair forming isocyanide as the main product.

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Orthophosphoric acid on heating gives???

Posted by Saksham Banyal 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Deeya Singh 6 years, 2 months ago

The orthophosphoric acid is with molecular formula of H3PO4 On gentle heating (500K) it gives pyrophosphoric acid. 2H3PO4 ---> H4P2O7 + H2O On strong heating (600K) it gives metaphosphoric acid. nH3PO4 ---> (HPO3)n +nH2O

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Why do we require artificial sweetening agents

Posted by Anchal Maurya 6 years, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Rathi 6 years, 2 months ago

Health conscious people and diabetic people use a.s.a to reduce calorie intake and for medical reasons.

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help me in this... during nitration of benzene with mixture of conc. HNO3 and conc.H2SO4 , HNO3 acts as a Base. explain...

Posted by Řøhăň Řąjpůť ✌️✊ 6 years, 2 months ago

CBSE > Class 12 > Chemistry

3 answers

Řøhăň Řąjpůť ✌️✊ 6 years, 2 months ago

thanks a lot sister. ?

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Deeya Singh 6 years, 2 months ago

Nitrating mixture consists of sulphuric acid and nitric acid. In the mechanism of nitration, first step comprises of the formation of nitronium ion. In order to do so, sulphuric acid protonates nitric acid. So sulphuric acid acts as an acid and nitric acid which accepts proton acts as a base.

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Rishabh Rathi 6 years, 2 months ago

It is because sulfuric acid is more acidic than nitric acid

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iupse name of ch3c(c2h5)2ch2br

Posted by Faizan Khan 6 years, 2 months ago

CBSE > Class 12 > Chemistry