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Steric hindrance

Posted by Sonu Yadav 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Steric hindrance is the slowing of chemical reactions due to steric bulk. It is usually manifested in intermolecular reactions, whereas discussion of steric effects often focus on intramolecular interactions. Steric hindrance is often exploited to control selectivity, such as slowing unwanted side-reactions.

ANSWER

How to do sterilization of water using bleaching powder

Posted by Ankita Kundliya 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Bleaching Powder is a chemical compound with formula Ca(ClO)₂. (Calcium hypochlorite). It is widely used for water treatment. It is used for disinfection of water in the treatment process. The chlorine released by the Bleaching powder kills the harmful germs present in water.. The residual effect of this chlorine protects water from getting infected / contaminated with pathogens.

ANSWER

The following data we're obtained during the first order thermal decomposition of N2O5 at constant volumes calculate rate constant

Posted by Kalpna Singh 6 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Calculate the packing efficiency in hexgonal close packing structure

Posted by Shashidhargoud Goudar 6 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

▪▪Amrit▪▪ ❤ 6 years, 6 months ago

it is not in syllabus bro

▪▪Amrit▪▪ ❤ 6 years, 6 months ago

solid state..u think it is not in syllabus i am i right???

Swati Singh 6 years, 6 months ago

The easiest method to compute the same ,has already given in the NCERT......

ANSWER

Are equimolar solutions of nacl and urea isotonic. Why

Posted by Shadab Ansari 6 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Nitrogen atom as 5velence electron but does not form NCL5 why

Posted by Janappa Janappa 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Nitrogen pentachloride, NCl5, is not possible because it cannot be formed. It cannot be formed because the nitrogen atom does not have vacant d-orbitals. Thus, electrons cannot be transferred from the chlorine atom to the nitrogen atom.

ANSWER

what is rate constant

Posted by Mudit Rastogi 6 years, 6 months ago

CBSE > Class 12 > Chemistry

4 answers

K@Łp@N@ $Øđh!?? 6 years, 6 months ago

It is equal to rate of reaction when concentration of each of the reactant is unity

Swati Singh 6 years, 6 months ago

Rate constant is the proportionality constant in the rate law that simply relates rate of the reaction with the concentration of the reactants raised to some powers(which may or may not be equal to stoichiometric co-efficients). Its unit depends upon the rate of the reaction ,equal to [mol L^-1]^(1-n) s^-1, where n is the order of the reaction.I hope the definition n formula will be useful for u!

Dindayal Rqthur 6 years, 6 months ago

It is define as the rate law expressionless when concentration of reactant become unity

Sia ? 6 years, 6 months ago

Rate constant is a coefficient of proportionality relating the rate of a chemical reaction at a given temperature to the concentration of reactant (in a unimolecular reaction) or to the product of the concentrations of reactants.

ANSWER

Is adsorption isotherm a part of our syllabus???

Posted by Rajput Somya Chauhan 6 years, 6 months ago

CBSE > Class 12 > Chemistry

4 answers

K@Łp@N@ $Øđh!?? 6 years, 6 months ago

Yes

Mitali Jain 6 years, 6 months ago

Yes it is an Important topic.

Dindayal Rqthur 6 years, 6 months ago

Yes even in back exercise of ncert contain a question about it

Sia ? 6 years, 6 months ago

No, it is not.

ANSWER

What is characteristic reaction in haloalkane

Posted by Sonu Yadav 6 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

In chapter general principle which topic has been removed

Posted by Apurv Bhadana Gurjar Apurv Bhadana Gurjar 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Dindayal Rqthur 6 years, 6 months ago

No any topic will remove but elingam diagram topic is add in syallbus see new ncert book

ANSWER

Explain the process of corrosion chemically innour surrounding

Posted by Aman Pandey 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Divyanshu Mishra 6 years, 6 months ago

When any metal react with oxygen then formed oxide of that metal ,this metal oxides called corrosion of that metal. For example: 4Al + 3O2 = 2Al2O3 Aluminium + Oxygen = Aluminium oxide 4Fe + 3O2 = 2Fe2O3 Ferrous + Oxygen = Ferric oxide

ANSWER

Draw chain isomers of heptanol and hexyne

Posted by Krishna Dixit 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Prashant Chaudhary 6 years, 6 months ago

I think heptanol is equal to ch2(oh)-ch2-ch2-ch2-ch2-ch2-ch2 And hexyne=ch triple bond c-ch2-ch2-ch2-ch3

ANSWER

What are superconductor

Posted by Tanvi Kandoi 6 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Nishu Sahu 6 years, 6 months ago

Superconductor are those substance which has property of superconductivity

Sia ? 6 years, 6 months ago

Superconductor is a substance capable of becoming superconducting at sufficiently low temperatures.

ANSWER

What is the covalent bond.

Posted by Mitali Jain 6 years, 6 months ago

CBSE > Class 12 > Chemistry

4 answers

Divyanshu Mishra 6 years, 6 months ago

The bond which is formed by sharing of electrons among atoms is called covalent bond. There are three types of covalent bond. 1- Single covalent bond 2-Double covalent bond 3-Triple covalent bond Ionic bond is used between positive ion and negative ion. Electrons donated by element get positive charge on it and those elements which gain electron gets negative charge on it. If you are satisfied with my answer give thanks, all those friends who read my answer give their thanks by pressing thanks icon. Best of luck

Akankhya Panda 6 years, 6 months ago

the bond fromed due to sharing of two or more electrons

Anubhuti Khatri 6 years, 6 months ago

It is a chemical bond formed due to sharing of electrons between atoms .

Dhiraj Kumar 6 years, 6 months ago

A chemical bond arise due to sharing of electron between two atoms is covalant bond.

ANSWER

What is the ionic bond.

Posted by Mitali Jain 6 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Divyanshu Mishra 6 years, 6 months ago

The bond which is formed between electropositive element and electronegative element is called IONIC BOND

Sia ? 6 years, 6 months ago

Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds.

ANSWER

Explain C-4 Axis Of Symmetry?

Posted by Gourav Chakraborty 6 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the value 10 raise to the power subtract 4

Posted by Erasmus Gaurav 6 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Kajal Kunwar 6 years, 6 months ago

???

Divyanshu Mishra 6 years, 6 months ago

10^-4 =10000^-1 =1/10000=1/10^4 =0.0001 The value of 10 raise to power -4 = 10000 raise to power -1 =1 divided by 10000=0.0001

Gourav Chakraborty 6 years, 6 months ago

?

ANSWER

Define Vant Hoff factor.?

Posted by Padma Tsultim 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 6 months ago

The relationship between the actual number of moles of solute added to form a solution and the apparent number as determined by colligative properties is called the van't Hoff factor (i).
i = (apparent number of particles in solution)/number of moles of solute dissolved
It is used to express the extent of association or dissociation of solute. If association or dissociation of solute particles takes place in the solution, then
i = observed measured value of colligative property/ expect value of colligative property
i = Number of particles after association or dissociation/ Number of particles of solute dissolved.

ANSWER

Define peptide linkage

Posted by Atul Gautam Sai 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 6 years, 6 months ago

Peptide linkage: a peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H₂O). This is a dehydration synthesis reaction (also known as a condensation reaction) and usually, occurs between amino acid. Peptide linkage is responsible for the primary structure of protein.

A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water (H₂O). This is a dehydration synthesis reaction (also known as a condensation reaction) and usually, occurs between amine. Peptide linkage is responsible for the primary structure of protein

ANSWER

calculate the molarity of 30ml of 0.5M H2SO4 diluted to 500ml

Posted by Ankit Puri 6 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Nishu Sahu 6 years, 6 months ago

3×10^-2

Gaurav Seth 6 years, 6 months ago

Volume of H₂SO₄ (V₁) = 30 ml)

Diluted volume of H₂SO₄ (V₂) = 500 ml

Number of moles present in 1000 mL of 0.5 M H₂SO₄ = 0.5 mol

Initial molarity M₁= 0.5 M

We have to find M₂(molarity of 500 ml solution)

M₂V₂ = M₁V₁

M₂ x 500 = 0.5 x 30

M₂ = 15/ 500 = 0.03 M

ANSWER

Me ch2c=ch+NaNH2----------?

Posted by Ambika Muduli 6 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What does unity in standard electrode potential mean??

Posted by Satyajeet Behera 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Pankaj Chadda 6 years, 6 months ago

1

ANSWER

To obtain granulated zinc by pouring molten zinc in cold water experiment

Posted by Shivani Gupta 6 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Convert Isopropyl chloride to 2-methylproplonaldehyde

Posted by Aman Khan 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Nasima Khan 6 years, 6 months ago

Ch3-ch=ch2+hcl in presence of HBr peroxide then ch3-ch2-ch2-Br and then nucleophillic substitution reaction take place in prescence of aqous koh and heat then Ch3-ch2-ch2-ch2-oh

ANSWER

Why hgl2 is added to aqueos solution of kI there is decrease in osmotic pressure

Posted by Sukhvir Gurm 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 6 years, 6 months ago

Freezing point of the solution will increase. Mercuric Iodide will react with Potassium Iodide to form dipotassium tetraiodomercury. The reaction is given below : 2KI + HgI2 = K2[HgI4] This association will decrease the number of ions in the solution as a result of which Van't Hoff Factor (i) will decrease as ndecreases from 4 to 3.

ANSWER

In "sym-tribromobenzene" what is the abbreviation of sym

Posted by Keerthu Raghu 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Anju Sharma 6 years, 6 months ago

Symmetrical

ANSWER

Write nernst equation the electrode reaction M"(aq)+ne gives M(s)

Posted by Yukesh.B.R Yukesh 6 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Vivek Singh 6 years, 6 months ago

E(oxidation potential )=E°(oxidation potential)-0.059/n log[1/M"(aq)]

ANSWER

Out of by 5 and SB 5 which may be a stronger oxidising agent and why

Posted by Prabhleen Rattan 6 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Valency

Posted by Melody Hanjabam 5 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Krishna Yadav 6 years, 6 months ago

combining capacity of an atom

Aman Kumar 6 years, 6 months ago

It is the required no.of electrons needed to the atoms of any element to fulfill its octet....

ANSWER

Can anyone tell me that ncert is enough for board exams as I am a non attending student so I'm little bit confused??

Posted by Akanksha Kumari? 6 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Srishti Choudhary ✍⏳ 6 years, 6 months ago

Yess ncert is enough also focus on previous yrs ques.

Gurman Kaur 6 years, 6 months ago

Yes it's sufficient but you must also focus on questions which are related to ncert which have different digits ??

ANSWER

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