Incorrect URL accessed!!!!

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how to learn ketone aldehyde and carboxylic acid chapter

Posted by Shivanshu Asthana 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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So2 has zero dipole moment why

Posted by Ashutosh Singh 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Yash Shukla 6 years, 3 months ago

Because struture if so2 is linear and bond angle is 180 degree so it cancel the net dipple

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Ortho and para nitrophenol are more acidic than phenol draw the resonance structure of the corresponding phenoxide ion

Posted by Ansunam Tiwari 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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Why we should avoide 2degree or 3degree alcohol on reaction with sodium/Potassium browmide. Plz help

Posted by Arjun Kartik 6 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Dr. Dashrath Kumar Hinunia 6 years, 3 months ago

Hindi Shikshan the elimination reaction is preferred for substitution reaction that's why 2 degree Alcohol and 3 degree Alcohol cannot react with Sodium Potassium Bromide

Pooja Bhakar 6 years, 3 months ago

Because this reaction occurs through SN2 mechanism due to this stearic hinderance in 2 or 3 degree is more than 1 degree and hence reaction occurs easily in 1 degree than 2 or 3 . Thus we should avoid 2 or 3 degree. l hope this answer will help you.

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Calculate the boiling point in solution when 2g of NaSO4 was dissolved in 50g of water assuming NaSO4 undergoes complete ionization .kb=o.52kkg/mol 77

Posted by Tanu Kaur 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Sajid Ali 6 years, 3 months ago

Its Na2SO4 not NaSO4.

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When will sample papers be released by CBSE for all subjects ❓

Posted by Khuskaran Sidhu 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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HNo3 is added during iodination of benzene??

Posted by Amol Gùpta 6 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Ɽøⱨł₮ ₲Ʉ₱₮₳ 6 years, 3 months ago

benzene is reversible without HNO3 iodination

Arjun Kartik 6 years, 3 months ago

To oxidise HI formed ,which may have other wise reduced to mathane .

Khuskaran Sidhu 6 years, 3 months ago

Because without HNO3,iodination of benzene is reversible

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How to pass chemistry

Posted by Kaushal Kumar 6 years, 3 months ago

CBSE > Class 12 > Chemistry

4 answers

Bipen Singh 6 years, 3 months ago

Only doing ncrt intext question

Pooja Bhakar 6 years, 3 months ago

Ncert portion of chemistry for board exam is most important

Pooja Bhakar 6 years, 3 months ago

By doing all ncert exempler and exercise

Avinash Verma 6 years, 3 months ago

By doing efforts daily

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Why diphenylamine is added to vulcanization?

Posted by Muskaan Sabharwal 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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How to make IUPAC Name of the coordination compounds?

Posted by Mahi Tiwari 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Mansi Sharma 6 years, 3 months ago

First name the ligand & then the central metal atom. Pls go through NCERT for more information

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List of practicals And how to do

Posted by Asha Ram 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Asha Ram 6 years, 3 months ago

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Oxidation number

Posted by Power Of Motivation 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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Explanation of an ideal soultion

Posted by Yashesh Vashishth 6 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Om Vishwakarma 6 years, 3 months ago

1- The solution that obey the Raoult's law over the entire range of concentration are know as Ideal solution . 2- ∆H = 0 ; ∆V = 0 .

Khuskaran Sidhu 6 years, 3 months ago

∆mix H=0 ∆mixV=0

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What is seudo molecular reaction

Posted by Supriya Kumari 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Bhumika Mishra 6 years, 3 months ago

Its pseudo unimolecular reaction in which moleculary of reaction is 2 but the order of reaction is1

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What are freons

Posted by Ta Laibaaa 6 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Anuradha Chhonkar 6 years, 3 months ago

CFC is also called freons

Khuskaran Sidhu 6 years, 3 months ago

Carbon Compounds in which all H-atoms r replaced by Cl or F- atoms.eg- CCl2F2 (freon -12)

Muskan Bamel 6 years, 3 months ago

Freon is a gas

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What is the mechanism of Kolbe's reaction?

Posted by Pooja Bhakar 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 3 months ago

The Kolbe reaction can be classified as a carboxylation chemical reaction. The reaction occurs when sodium phenoxide is allowed to absorb carbon dioxide and the resulting product is heated at a temperature of a 125-degree celsius and a pressure of over a hundred atmospheres. An unstable intermediate is now formed.

This unstable intermediate goes through a proton shift, leading to the formation of sodium salicylate. Now, this mixture is treated with sulfuric acid. The acidification of the mixture yields the salicylic acid. The illustration for the Kolbe reaction mechanism is given below:

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Sample paper of chemistry new pattetn

Posted by Raj Pawar 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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A first order reaction take 20 minutes for 45/ percentage decomposition calculate the time when its 75 percent completed

Posted by Rekha Kumari 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Khuskaran Sidhu 6 years, 3 months ago

k= 2.303/20 ×log(1/0.55) Then,calculate value of k ,put below t=2.303/k ×log (1/0.25) Find t, that's the answer ?

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What is photochemical effect

Posted by Khan Alex 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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Some important chapters Tell me anyone

Posted by Kaushal Raj 6 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Khuskaran Sidhu 6 years, 3 months ago

Solution,electrochemistry,P block,coordinate compnds,organic full

Vipul Saini Saini 6 years, 3 months ago

Organic is most important

Řøhăň Řąjpůť ✌️✊ 6 years, 3 months ago

every chapters are important. but focus more on soln, electro, kinetics, p, d, f block, coordinate compound, chapter 10,12,13.

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Benzyl chloride undergoes SN1 reaction faster than cyclohexyl methyl chloride give reason..

Posted by Priya Dharshini ? 6 years, 3 months ago

CBSE > Class 12 > Chemistry

5 answers

Khuskaran Sidhu 6 years, 3 months ago

It forms resonance stablised carbocation while clorohexyl..... Do not

Řøhăň Řąjpůť ✌️✊ 6 years, 3 months ago

Benzyl chloride will undergo Sn1 reaction faster becoz it can form stable 2° carbocation which can be stabilized by π electrons of benzene ring. on the other hand in case of cyclohexyl methyl chloride, 1° carbocation is formed which is least stable.

Rohit Patel 6 years, 3 months ago

In sn1 rxn the reactivity depends upon the stability of carbocation formed in the first step. Due to stable nature of 3° carbonation, the sn1 rxn is favoured by heavy (bulky) groups on the carbon atom attached to halogens. And the sn1 order is- benzyl> allyl> 3°>2°>1°> methyl halides.

Nishu Goyal 6 years, 3 months ago

Stability of carbocation dekho pata lag jaega

Yogita Ingle 6 years, 3 months ago

Benzyl chloride undergoes SN1 reaction faster than cyclhexyl chloride because in case of benzyl chloride, the carbocation formed after the loss of CL- is stablised by resonance, whereas , no such stabilization is possible in the carbonation obtained from cyclohexyl methyl chloride.

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Dancing resonance

Posted by Ritik Kumar 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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How to test ketone ,phenol,aldehyde,amine,carboxylicacid,alcohol

Posted by Santosh Kumar(Father) 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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What is vander waal forcrs

Posted by Kajal Modi 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 3 months ago

The attractive intermolecular forces are called vander Waals’ force. in honor of Dutch scientist Johannes van der Waals (1837-1923) as he explained the deviation of real gases from the ideal behaviour through these forces.

Van-der Waals’ s forces vary considerably in magnitude and include , dispersion forces or London forces, dipole-dipole forces, and dipole-induced dipole forces.

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Define the term rate expression?

Posted by Josna Mary Thomas Thomas 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 3 months ago

Rate law

The representation of rate of reaction in terms of molar concentration of the reactants participating in a reaction raised to some power is called rate law.
It is also called rate expression or rate equation.
Consider a reaction:

2NO (g) + O₂ (g) --> 2NO₂

Rate ∝ [NO]²

Rate ∝ [O₂]

Combining these two rates we derive

Rate ∝ [NO]² [O₂]

Rate =k [NO]² [O₂]

Where k is the proportionality constant with a definite value at a specific temperature for a specific reaction and is called Rate Constant.
Rate law expression = -d[R]/ dt = k [NO]² [O₂]