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Anjan Karthi 2 years, 8 months ago

OR, we can do the conversion as follows too :- a) Anti Markovnikov addition of HBr. b) Nucleophilic substitution by KCN (we get butane nitrile). c) DIBAL-H addition to get pentanal from butane nitrile. d) Reduction to pentanol by LiAlH4

ANSWER

What is the concept of low oxidation state

Posted by Arnav Mittal 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Preeti Dabral 2 years, 9 months ago

The low oxidation state chemistry of the seven lightest metallic elements is described, with an emphasis on the introduction of bulky ligands to provide sufficient kinetic stability to allow the synthesis of well-defined compounds, which are isolable under normal conditions of temperature and pressure.

ANSWER

To compare the effectiveness of different emulsifying agents in forming emulsions

Posted by Kiranjit Kaur 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Preeti Dabral 2 years, 9 months ago

Emulsifying agents act as surfactants that decrease the surface tension between the dispersed phase and the dispersion medium. Emulsifying agents stabilize the emulsion by forming an interfacial film between suspended particles and the medium. hence, stabilize the emulsion by adding the third component. For example, agar is an emulsifying agent used in food.

ANSWER

Reactions for alcohols, phenols, and ethers referencing a scientists

Posted by Pawan Yumnam 2 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Rspl question paper 2022

Posted by Sri Sri 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Ayan Khan 2 years, 9 months ago

jgdjkkk

ANSWER

How to solve chemical equation balance class 12

Posted by Ananya Kasaudhan 2 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Preeti Dabral 2 years, 9 months ago

To make the number of atoms of each element the same on both sides of the equation, multiply coefficients (the numbers in front of the formulas). The hydrogen and oxygen atoms are the easiest to balance last. Check your work by indicating the state of matter of the reactants and products.

Tushar Goswami 2 years, 9 months ago

ANSWER

What is Frieda-Craft reaction ?

Posted by Sristy Singh 2 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Preeti Dabral 2 years, 9 months ago

Friedel Crafts alkylation reaction can be explained as the alkylation of an aromatic ring using an alkyl halide in presence of a strong Lewis acid which acts as a catalyst. In the following given reaction, AlCl₃ is used as a catalyst and the aromatic ring taken is benzene.

Alok Mittal 2 years, 8 months ago

R-X + AgF ===> RF + AgX

ANSWER

V3+,Cr2+, Cu+, Fe3+ Identify the ion which is a strong reducing agent in aqueous solution Give suitable reason

Posted by Shrishti Yadav 2 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Anjan Karthi 2 years, 8 months ago

It is Cr2+ (I AM SORRY, THE FIRST ANSWER I GAVE WAS WRONG.) When Cr 2+ gets oxidised, it becomes Cr 3+ which has a relatively more stable electronic configuration in complexes (3d3 ~ t2g3). So, it undergoes easy oxidation. So it can easily give away electrons and thus, is a strong reducing agent.

Anjan Karthi 2 years, 9 months ago

Fe3+

ANSWER

Wolf kishner reaction explain

Posted by D S ❤️ Dhansika Sri 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Sakshi Raj 2 years, 9 months ago

when aldehyde and ketone is reduced with hydrazine followed by heating with KOH in ethelene glycol form corresponding hydrocarbon(N2H2).

ANSWER

Name two main factors that favours a metal ions forming complex

Posted by Priya Shishodiya 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 9 months ago

High denticity and low crystal field splitting enthalpy of ligand molecules or ions.

ANSWER

Why aniline does not undergo Friedal - Craft reaction

Posted by Aarzoo Saini 2 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Anjan Karthi 2 years, 9 months ago

Aniline, being a Lewis base, and anhydrous Aluminium chloride (catalyst in Friedel-Craft reaction), being a Lewis acid, forms a highly stable and irreversible complex which prevents further reaction to take place in aniline.

Aarzoo Saini 2 years, 9 months ago

Answer the question

4Thank You

ANSWER

What do you mean by ideal solution 2 give examples?

Posted by Khushi Kumari 2 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Ankit Yadav 2 years, 9 months ago

Ideal situation is the solution which follows to raoult,s law....

Anjan Karthi 2 years, 9 months ago

Solutions which follow Raoul's law under all possible ranges of concentrations of it's constituents are called IDEAL SOLUTION. Neither do the volume of it's constituents change upon mixing nor do their enthalpies.

ANSWER

Following ions of 3d transition series are given Ti4+,Vi2+,Cr3+,Mn3+ Identify the ion which is a). Most stable in aqueous solution. b). a strong oxidising agent. c). colourless in aqueous solution.

Posted by Vaibhavi Rai 2 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Ashutosh Mishra 2 years, 8 months ago

A first order reaction is 10% complete in 20 min. The time taken for 19% completion is: fPET (Kerala) 2005] (a) 30 min (b) 40'min (c) 50 min (d)38 min (e) 45 min

Anjan Karthi 2 years, 9 months ago

(a) Cr3+. (b) V2+. (c) Ti4+

ANSWER

Fictional group of ketone

Posted by Nitin Bhardwaj 2 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Prateek Dubey 2 years, 7 months ago

RCOR

Nitin Bhardwaj 2 years, 9 months ago

C=O

ANSWER

Give the IUPAC name of benzene CH=CH-CHO

Posted by Priu S 2 years, 9 months ago

CBSE > Class 12 > Chemistry

5 answers

Vartika Pandey 2 years, 9 months ago

3 - phenylprop-2-enal

Nitin Bhardwaj 2 years, 9 months ago

Prop 2 enal

Saiyam Bajpai 2 years, 9 months ago

Prop-2-enal

4Thank You

Dibyajyoti Sahoo 2 years, 9 months ago

3-phenylprop-2-enal

Ayush Singh 2 years, 9 months ago

Prop-2-enal

ANSWER

What is Lucas reagent?

Posted by Yash Vashisth 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishi Kumar 2 years, 9 months ago

It is a mixture of anhydrous zinc chloride with concentrated hcl

ANSWER

What is quaternary structure of protein

Posted by Aarzoo Saini 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 9 months ago

The quaternary structure of a protein is the association of several protein chains or subunits into a closely packed arrangement. Each of the subunits has its own primary, secondary, and tertiary structure. The subunits are held together by hydrogen bonds and van der Waals forces between nonpolar side chains.

ANSWER

When a coordination compound cocl3.6nh3 is mixed with agno3. 3 moles of agcl are precipitated per mole of the compound. Write structural formula of the complex

Posted by Vanshika Singh 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 9 months ago

[Co(NH3)6]Cl3.

ANSWER

Treatment of benzaldehyde with HCN gives a mixture of two isomers which cannot be separated by fractural distillation. Explain why

Posted by Adithya A 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Preeti Dabral 2 years, 9 months ago

Almost all physical properties like boiling point are the same for such isomers. They also have identical chemical properties. Therefore, there is no property on the basis of which the two isomers can be separated even by careful fractional distillation.

ANSWER

What is retard Reaction

Posted by Pratish Anand 2 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Preeti Dabral 2 years, 9 months ago

A retarder is a chemical agent that slows down a chemical reaction. For example, retarders are used to slow the chemical reaction hardening of plastic materials such as wallboard, concrete, and adhesives. Sugar water acts as a retarder for the curing of concrete.

Anjan Karthi 2 years, 9 months ago

The Étard reaction is a chemical reaction that involves the direct oxidation of an aromatic or heterocyclic bound methyl group to an aldehyde using chromyl chloride.

ANSWER

Determination of molarity and strength practical solutions

Posted by Priya Preeti 2 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Practical que and solutions of chemistry

Posted by Priya Preeti 2 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

pkb of aniline is more than that of methylamine

Posted by Rajveer Singh 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Anjan Karthi 2 years, 9 months ago

Higher pKb means lower basic character. This indicates that aniline has less basic character than methyl amine. This is true because the benzene ring in aniline induces -R effect to thereby, pull off electron density from nitrogen making electron donation tougher. But, in methyl amine, the methyl group shows +R effect and this, greater electron density and greater basic character.

ANSWER

Ethylamine is soluble in water whereas aniline is not.

Posted by Gurpreet Singh 2 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Anjan Karthi 2 years, 8 months ago

Another possible explanation is that solubility of any substance in water is greatly affected by the presence of hydrogen bonds between the substance and water molecules (if any), provided the hydrogen bonds require an electronegative atom with AVAILABLE lone electron pairs. In aniline, -R effect of phenyl ring removes electron pair on nitrogen atom (so, LESS chance for hydrogen bonding). But, methyl amine has methyl group with +R effect which actually helps the methyl group to donate electron pairs to nitrogen, thereby increasing the electron density on nitrogen atom.

Ashutosh Singh 2 years, 9 months ago

Due to resonance, aniline gets stabalise and it becomes difficult to remove electrons from it . Hence it is not soluble in water

ANSWER

Write a note on classification of solid base on different winding force

Posted by Ghanashyam Beshra 2 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Write a note on classification of solids based on different binding force

Posted by Ghanashyam Beshra 2 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Preeti Dabral 2 years, 9 months ago

Based on the nature of the forces that hold the component atoms, molecules, or ions together, solids may be formally classified as ionic, molecular, covalent (network), or metallic. The variation in the relative strengths of these four types of interactions correlates nicely with their wide variation in properties.

ANSWER

Carboxylic acid and carbonyle group is same??

Posted by Divya. Kumari 2 years, 10 months ago

CBSE > Class 12 > Chemistry

3 answers

Preeti Dabral 2 years, 10 months ago

The main difference between carbonyl and carboxyl group is that carbonyl group consists of a carbon atom double bonded to an oxygen atom whereas carboxyl group consists of a carbonyl group and a hydroxyl group bonded to each other via the carbon atom of the carbonyl group.

Aarzoo Saini 2 years, 9 months ago

Nikita Jain 2 years, 10 months ago

No, the carboxylic acid is COOH while carbonyl group is a C doubly bonded with O and 2 hydrogen atom.

ANSWER

What is alcohol?

Posted by Priyanshu Patel 2 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Monika Patel 2 years, 10 months ago

Alcohol is a beverage drink that consists of ethanol

Nidhi Yadav 2 years, 10 months ago

When alcohol (-OH) group is attached to a alkyl group is called alcohol

ANSWER

State preparation of ether

Posted by Amisha Singh 2 years, 10 months ago

CBSE > Class 12 > Chemistry

2 answers

Preeti Dabral 2 years, 10 months ago

At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points.

Anjan Karthi 2 years, 10 months ago

Ethers can either be treated by acid-catalyzed hydration of alkenes at 413 K, or by Williamson synthesis (Reaction between sodium alkoxide and alkyl halide to give alkoxy alkane and sodium halide).