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Jass . 4 years, 10 months ago

When carboxylic acid (having alpha-hydrogen) reacts with Red P , X2 (X=F,Cl,Br,I) and water, then there is formation of alpha halogenated carboxylic acid. For eg. Ch3Cooh + Red P + Cl2 + H2O = ch2(cl)cooh

ANSWER

Biomolecule

Posted by Reena Jangra Jangra 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Devil ? 4 years, 9 months ago

Very easy for bio students

Gourav Sharma 4 years, 9 months ago

Ha ye chapter h chemistry me both chota sa chapter h aur khafi portion b reduce hua

ANSWER

Using crystal field theory write electonic configuration (interms of t2g and eg)& calculate the magnetic moment. (i) [CoF6]3- (ii) [Fe(CN) 6]4-

Posted by Varada Menon 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Aayan Patel 4 years, 9 months ago

Magnetic moment μ=n(n+2) where, n= Number of unpaired electrons i) Number of unpaired electrons in [CoF6]3−=4 Magnetic moment =n(n+2)=4(4+2)=24=4.9 BM

ANSWER

Name the zeolite present in the petroleum industry

Posted by Thachi Thachi 4 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

One method of preparation of colloid

Posted by Thachi Thachi 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 4 years, 10 months ago

Chemical Methods of Preparation of Colloids

Hydrophilic or Lyophobic colloidal solutions can be prepared by various chemical techniques such as:

Double Decomposition Technique: When hydrogen sulphide is passed through a solution of arsenious oxide in distilled water, we get a colloidal solution of arsenious chloride.

As₂O₃ + 3H₂S → As₂S₃ + 3H₂O

Oxidation Technique: A colloidal solution of Sulphur is made to pass through an aqueous solution of sulphur dioxide. It can also be obtained by passing the gas through a solution of an oxidization agent such as bromine water as well as nitric acid.

SO₂ + 2H₂S → 2H₂O + 3S

H₂S + [O] → H₂O + S

ANSWER

Yrr conversion kaise sikhe mujhe bilkul nahi aa raha please help in me in that

Posted by Diksha Singh 4 years, 10 months ago

CBSE > Class 12 > Chemistry

4 answers

Gourav Sharma 4 years, 9 months ago

Aur btao kya puchna h

Diksha Singh 4 years, 10 months ago

Waise questions board ke ncert exercise me se hi aaenge kya

5Thank You

Gurneet Singh 4 years, 9 months ago

Same here

Aditya Singh 4 years, 10 months ago

Diksha if you want to learn conversions so learn all the named reactions in all chapters

3Thank You

ANSWER

Notes for surface chemistry

Posted by Piyush Vaishnav 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Amrita Thakur 4 years, 10 months ago

I have

Rajveer Chauhan 4 years, 10 months ago

I have a notes

ANSWER

Cbse board ke liye reference book kon si good hai

Posted by Ashwani Pratap Singh Lodhi 4 years, 10 months ago

CBSE > Class 12 > Chemistry

3 answers

Himanshu Saini 4 years, 10 months ago

All in one is the bestest book for theory and questions for boards...

Ni Na Atsuko 4 years, 10 months ago

Xam idea Question bank

Aditya Singh 4 years, 10 months ago

Moderns abc

ANSWER

Difference between octahedral void and tetrahedral void

Posted by Krishan Kumar 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Amrita Thakur 4 years, 10 months ago

Octahedral voids -such voids are formed where triangular voids of second layer covers the triangular voids of first layer but apex of each is in opposite direction

Amrita Thakur 4 years, 10 months ago

Tetrahedral voids- such voids are formed when a sphere of second layer covers the voids of first layer

ANSWER

What.do.you.mean.by.surface.chemistry

Posted by Sachin Chandela 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Suraj Kumar 4 years, 10 months ago

Chemical phenomena that occurs at interface of two surfaces.

ANSWER

Short note on electro chemistry

Posted by Alfaz Siddiqui 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Mk 10 4 years, 10 months ago

Electrochemistry is the process of production of electricity from the energy released during spontaneous chemical reactions (or) using electrical energy to undergo a non-spontaneous reactions.

ANSWER

What is solvation effect? Out of SN1 and SN2 which have solvation effect?

Posted by Anisha Kabsuri 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 4 months ago

SN1 • Polar solvent stabilizes transition state and carbocation intermediate. group. SN2 • Need polar solvent to dissolve nucleophile. Protic solvent slows rate by solvating nucleophile • Aprotic solvent increases rate by binding cation and thus freeing nucleophile.

ANSWER

What is the difference between Wurtz-Fittig reaction and Fittig reaction,?????

Posted by Kirti Sharma? 4 years, 10 months ago

CBSE > Class 12 > Chemistry

4 answers

Gourav Sharma 4 years, 9 months ago

Dekho both easy h thoda sa socho aur answer mil jaye ga

Himesh Rawat 4 years, 10 months ago

Ncert Book mai saaf saaf de rkha hai proper way mai

Yogita Ingle 4 years, 10 months ago

Wurtz - Fitting reaction:
Aryl halide and alkyl halide couple in presence of sodium metal / dry ether to form alkyl benzene.
For example, bromobenzene reacts with methyl bromide in presence of sodium. dry ether to form toluene.
C₆H₅−Br+CH₃−Br+2Na → dryether C₆H₅−CH₃+2NaBr

Bhawna Chaudhary 4 years, 10 months ago

The basic diff. Is that in wurtz fittig rxn alkyl halide and aryl halide combine but in Fitting rxn both the compound which react are aromatic halide

ANSWER

Write the nerst equation for the electrode reaction: Mn+ne -M(s)

Posted by Ngachanyo Ps 4 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Propene to propan_1_ol

Posted by Vikas Payla 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Sanjana Dua?????❣️ 4 years, 10 months ago

Propene + HBr forms Ch3ch2ch2 -Br inthe presence of peroxide and Ch3ch2ch2-Br heat with KOH gives rise to Ch3ch2ch2OH Hope it's help u ??

ANSWER

What are ambientate ligands

Posted by Vansh Prajapati 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Yogita Ingle 4 years, 10 months ago

A ligand is an ion or molecule, which donates a pair of electrons to the central metal atom or ion to form a coordination complex. Ambidentate ligand is a type of ligands which have the ability to bind to the central atom via the atoms of two different elements.

Examples: thiocyanate ion(NCS^–) which can bind to the central metal atom or ion with either nitrogen or sulfur atoms.

Krishna Vaishist 4 years, 10 months ago

If a ligand has more than 1donating site like in CN the bond can be formed from either C or N atom .so is the ambientate ligand.

ANSWER

What are the applications of van't Hoff factor

Posted by Abhi Thakur 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Jassi Midha 4 years, 9 months ago

Deleted from syllabus

Kaushal Kumar Gupta 4 years, 10 months ago

To find abnormal molar mass of a compound

ANSWER

Practicals???

Posted by Ishan Sharma 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Devil ? 4 years, 10 months ago

Tentative dates aa gyi h

Kaushal Kumar Gupta 4 years, 10 months ago

Hamara bhi abhi nahi huaa hai bahi

ANSWER

वाण्ट हाफ गुणांक से क्या अभिपाय है

Posted by Vandana Patel Vandana 4 years, 10 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why nitrogen cannot exhibit +5 oxidation state?

Posted by Muthu Kamatchi 4 years, 10 months ago

CBSE > Class 12 > Chemistry

3 answers

Aditya Singh 4 years, 10 months ago

Due to absence of vacant d orbitals

Vansh Prajapati 4 years, 10 months ago

Due to the absence of d orbital

Yogita Ingle 4 years, 10 months ago

Nitrogen with n = 2 has s and p orbitals only. If does not have d orbitals to expand its valence shell. That is why it does not form pentahalide.

ANSWER

Trick to determine Electron Withdrawing group and Electron Donating groups?

Posted by Sneha Panwar 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Bhawna Chaudhary 4 years, 10 months ago

Those milecules/elements who have lone pair are electron donating grps. Alkyl are always electron donating .You can simply identify them in alliphatic molecules but the confusion arise in aromatic compound for example halogens are normally electron withdrawing but when connected in aromatic compound it act as electron donating. You can clear your confusion by just remembering 2 things:- 1. Halogens connected in aromatic compound are always E.D.G 2.any compound like (OCH3) in which Oxygen is more negative than carbon. If it is connected to ar.compound from Oxygen side (more -ve) than it will act as E.D.G as bcz carbon will try to repell the electrons.but if it is cnnctd through Carbon (less -ve) it will act as E.W.G bcz oxygen is nt directly connected to ar.ring so it will try to attract electrons Hope it will help 2 clear your confusion and remembering E.W.G and E.D.G

ANSWER

Lenz's Law describe.

Posted by Mr. Singh 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Rohit Kushwaha 4 years, 10 months ago

Induced emf is directly proportional to rate of change of flux But induced emf is always in opposite directions e = - d(flux)/dt

ANSWER

List out the real life examples for adsorption

Posted by Namitha Navaneeth Mk 4 years, 10 months ago

CBSE > Class 12 > Chemistry

3 answers

All Rounder Mkjha 4 years, 10 months ago

Silica gel

Aayush Singh 4 years, 10 months ago

Corrosion

Vedansh Sharma 4 years, 10 months ago

Oil n water

ANSWER

Convert-:benzoic acid to benzamide

Posted by Vishal Khandelwal 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Krishna Vaishist 4 years, 10 months ago

With NH3 benzoic acid is converted to benzamide.

Yogita Ingle 4 years, 10 months ago

Benzoicacid reacts with NH3 to form ammoniumsalt which on heating decomposes to form benzamide
Ph−COOH+NH₃⇌ Ph−COONH₄+ΔPhCONH₂+H₂O

ANSWER

Convert-:aniline to benzene

Posted by Vishal Khandelwal 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Mr. Singh 4 years, 10 months ago

Aniline to benzene through phenol has only two steps. First, Aniline reacts with nitrous acid in room temperature. It gives phenol. Then phenol is distilled with zinc powder to give benzene.

ANSWER

Convert-:benzene to benzoic acid

Posted by Vishal Khandelwal 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 4 years, 10 months ago

Convert benzene to methyl benzene by reacting it with CH₃Cl and anhydrous AlCl₃. Oxidize methyl benzene with a powerful oxidizing agent like alkaline KMnO₄ we will get benzoic acid.

ANSWER

Convert-: aniline to toluene

Posted by Vishal Khandelwal 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 4 years, 10 months ago

Aniline is treated with sodium nitrite in Hydro-chloric acid at temperature 423K to form benzene diazonium chloride followed by hydrolysis by weak acid benzene .

Benzene is treated with aluminium chloride to form toulene.

ANSWER

Convert ethyl bromide to propanol

Posted by Vishal Khandelwal 4 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Aditya Singh 4 years, 10 months ago

By passing aq koh

Bhawna Chaudhary 4 years, 10 months ago

treat ethyl bromide with KCN it will form propanenitrile. add H2O in acidic med. it will become propanoic acid and now u can simply reduce propanoic acid it will form propanol

ANSWER

Why does not the initial supply of heat act as a activation energy in physical adsorption ?

Posted by Vaishali Dahiya 4 years, 10 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 4 years, 10 months ago

Chemisorption involves high activation energy. So, first, it increases and then decreases with increase in temperature. The initial increase is due to the heat supplied which act as activation energy required for chemisorption. But later it decreases due to the exothermic nature of adsorption at equilibrium.