CBSE > Class 11 > Chemistry | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

How much potassium chlorate should be heated to produce 2.24L of oxygen at NTP?

Posted by Yash Adhikari 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 2 years, 11 months ago

When potassium chlorate is heated, then following reaction takes place:

2KClO₃ {tex}\rightarrow{/tex} 2KCl + 3O₂

Molecular mass of 1mol KClO₃ = 39 + 35.5 + 3 {tex}\times{/tex}16= 122.5 g

Molecular mass of 2 mols of KClO₃ = 2{tex}\times{/tex}122.5 g =245 g

Volume occupied by 3 mol of oxygen = 3{tex}\times{/tex}22.4L = 67.5 L

Therefore, 67.2L of oxygen is produced from 245g of KClO₃

2.24L of oxygen is produced from = {tex}\frac { 245 } { 67.2 } \times 2.24{/tex}= 8.17g of KClO₃

0Thank You

ANSWER

Thermodinamic

Posted by Aanee Sahu 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Mastram Kasana 2 years, 11 months ago

Notes

4Thank You

ANSWER

What is the oxidation state of fe in fe(so4)3 ?

Posted by Rupa Kattubadi 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Account Deleted 2 years, 11 months ago

If it is fe2(so4)3 , then the oxidation state of fe is +3 Derivation :- suppose oxidation number of fe is x , but We know that oxidation number of (so4)3 is -6 so calculating :- 2×x + (-6) = 0 x = 3

0Thank You

ANSWER

Diffrence between orbit and orbital

Posted by Roshan Sahu 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Trilok Kholwad 2 years, 11 months ago

😂😂

0Thank You

ANSWER

What is the secondary valency of cobalt in [Co(en2) cl2]+? (A) 6 (B) 4 (C) 2 (D) 8

Posted by Kashish Garg 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Navyam Chhabra 2 years, 11 months ago

0Thank You

ANSWER

Which of the following reactions are feasible? (A) CH3CH2Br+NA+O-C(CH3) 3TO CH3CH2-O-C(CH3) 3 (B) (CH3) 3C-CL+NA+O-CH2CH3 TO CH3CH2-O:C(CH3) 3 (C) Both(a) and (b) (D) neither (a) nor (b)

Posted by Kashish Garg 2 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Assertion (A) : transition metals have high enthalpy of atomisation. Reason (R) : greater number of unpaired electrons in transition metals results in weak metallic bonding. (A) both (a) and (r) are true and (r) is the correct explanation of (a). (B) both (a) and (r) are true, but (r) is not the correct explanation of (a). (C) (a) is true, but (r) is false. (D) (a) is false, but (r) is true.

Posted by Kashish Garg 2 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Assertion (A) : chlorobenzene is resistant to electrophilic substitution reaction Reason (R):C-Cl Bond in chlorobenzene acquires partial double bond characters due to resonance. (A) both (a) and (r) are true and (r) is the correct explanation of (a). (B) both (a) and (r) are true, but (r) is not the correct explanation of (a). (C) (a) is true, but (r) is false. (D) (a) is false, but (r) is true.

Posted by Kashish Garg 2 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Mass of copper metal is 6.342g and the density is 7.6g/cc what is it's volume

Posted by Deshna Vanshika 2 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Discuss the principle of estimation of halogen ,sulphur and phosphorus present in an organic compound ?

Posted by Sakshi Badhol 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Satyam Jha 2 years, 11 months ago

The answer is

0Thank You

ANSWER

Note on diborane

Posted by Divya Dave 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Nezuko ... 2 years, 11 months ago

B2H6

0Thank You

ANSWER

Class 11 chemistry paper

Posted by Priyanka Tiwari 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Bharath G 2 years, 11 months ago

U have to study

2Thank You

ANSWER

Name some carcinogenic hydrocarbons..???

Posted by Palak . 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 2 years, 11 months ago

The substances such as benzene and polynuclear hydrocarbons having more than two benzene rings which are fused together also have carcinogenic effects. These polynuclear hydrocarbons are formed when incomplete combustion of organic material such as tobacco, coal, and petroleum takes place.

0Thank You

ANSWER

Pent-1-ene with HCL gives

Posted by Sumit Bhati 2 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Gaurav Kakkar 2 years, 11 months ago

2-chloropropane

1Thank You

ANSWER

explain heisenberg principle

Posted by Sonia . 3 years ago

CBSE > Class 11 > Chemistry

3 answers

Gaurav Kakkar 2 years, 11 months ago

It is not possible to find the uncertainty in position or momentum simultaneously

0Thank You

Prince Kundu 3 years ago

Friends....?

0Thank You

Prince Kundu 3 years ago

The Heisenberg principle is a principle in physics that states that the uncertainty principle states that it is impossible to know with certainty the state of a particle at any given moment. Is this helpful 😊

0Thank You

ANSWER

In what manner is electrometric effect different from inductive effect

Posted by Himanshu Himanshu 2 years, 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 2 years, 10 months ago

Inductive effect is observed when two atoms with different electronegativity values form the chemical bond whereas Electromeric effect occurs when a molecule having multiple bonds is exposed to an attacking agent such as a proton.

0Thank You

ANSWER

Why d- block elements called transition elements

Posted by Shivani Maurya 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Akshit Dogra 3 years ago

Transition elements are those which has totally unfilled nth and n-1th and n-2th shell. That type of elements are known as transition elements

0Thank You

ANSWER

Explain the conformations in ethene

Posted by Shanika Sharma 3 years ago

CBSE > Class 11 > Chemistry

5 answers

Palak . 2 years, 11 months ago

Ethene is a molecule with a lone pair of electrons. It is a strong .This is why it is often used in organic chemistry to create molecules with a high degree of flexibility. electrons to other molecules .Ethene can also form a bridge between molecules, which is why it is often used in organic synthesis. I think it is helpful for u

0Thank You

Prince Kundu 3 years ago

Will you be my friend 💛

0Thank You

Prince Kundu 3 years ago

Ethene is a molecule with a lone pair of electrons. It is a strong electron donor, meaning it can donate electrons to other molecules. This is why it is often used in organic chemistry to create molecules with a high degree of flexibility. Ethene can also form a bridge between molecules, which is why it is often used in organic synthesis.

0Thank You

Tejasvita Kumari 3 years ago

Hii

1Thank You

Shiva Dehariya 3 years ago

0Thank You

ANSWER

Can anybody provide notes of chapter 13

Posted by Prince Kundu 3 years ago

CBSE > Class 11 > Chemistry

2 answers

Prince Kundu 3 years ago

Thank you soo much but these are not notes

1Thank You

Shanika Sharma 3 years ago

Hydrocarbon: the compound consist of hydrogen and oxygen is called hydrocarbon. Classification of hydrocarbon: depending upon the nature of carbon carbon Bond. Hydrocarbon Bond are divided into flowing three main categories: Saturated hydrocarbon: the hydrocarbon which contains all the carbon carbon single bond are called saturated hydrocarbon

4Thank You

ANSWER

Applications of Bernoulli 's Theorem.

Posted by Kritika Prasad 3 years ago

CBSE > Class 11 > Chemistry

2 answers

Akrati Shukla 3 years ago

Venturimeter is an application of bernoulli's principal.

0Thank You

Atharv Birajdar 3 years ago

Semen

0Thank You

ANSWER

Justify giving reactions that amount halogens fluorine is the best oxidant and among hydrohalic compounds hydroiodic acid is the best reductant

Posted by Rohit Kumar 3 years ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is equilibrium formula

Posted by Badal Choudhary 3 years ago

CBSE > Class 11 > Chemistry

3 answers

Bharath G 2 years, 11 months ago

Kp=concentration of product divided by concentration of reactant

0Thank You

Gaurav Kakkar 2 years, 11 months ago

Rate of forward = rate of backward

1Thank You

Pushpendra Choudhary 3 years ago

Rate of reactants = rate of product, In reversible reaction.

0Thank You

ANSWER

Explain Wurtz reaction with suitable example

Posted by Raffiqua Rr 3 years ago

CBSE > Class 11 > Chemistry

2 answers

Atharv Birajdar 3 years ago

2CH³CL+2NA [DRY ETHER PRESENCE]___ CH³‐CH³ +BYPRODUCT 2NACL

0Thank You

Shanika Sharma 3 years ago

Wurtz’s reaction is an organic chemical coupling reaction wherein sodium metal is reacted with two alkyl halides in the environment provided by a solution of dry ether in order to form a higher alkane along with a compound containing sodium and the halogen.

0Thank You

ANSWER

Bohrs model postulates advantages limitations

Posted by Akshat Karwa 3 years ago

CBSE > Class 11 > Chemistry

1 answers

Akshat Karwa 3 years ago

Wat

1Thank You

ANSWER

12 ml of a gaseous hydro carbon was exploded with 50 ml of Oxygen . the volume measure after explosion was 32 ml . after treatment with KOH the volume demenesd to 8 ml . determine the formula of hydro carbon

Posted by Parnika Singh 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Shanika Sharma 3 years ago

12 ml CxHy+50 ml(x+y/4)O2=xCO2+y/2 H2O ∴ volume of O2 (required to react with CxHy) =(x+y /4)volume of CxHy =(x+y/4)×12--------(1) After passing over KOH, CO2 is absorbed Then volume of O2 (remained) = 8 ml (2)⇒{50−12(x+y/4)}+12x=32 50−12x−3y+12x=32 50−3y=32⇒y= 50-32/3=6 (3)⇒50−12(x+y/4)=8 ⇒50−12x−3y=8 ⇒50−12x−18=8 ⇒2x=32−8 x=24/12=2 ∴ Hydrocarbon is C2H6 Note:- Volume of H2O is not taken because the volume measured at temp. below 1000C where it is liquid. However question doesn't specify it.

1Thank You

ANSWER

If degree of dissociation of ammoina is 10% then find the concentration of NH3, N2, H2 at equilibrium state at Kc =1

Posted by Diksha Verma 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Balance reaction given below using half reaction method Cr2O7^-2 + SO2 gives Cr^+3 + HSO4^- + H2O

Posted by Priya Mishra 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Sodium salt of which acid will be needed for the preparation of hexane while reaction with water and electricity write chemical equation for the reaction

Posted by Shubham Thakur 3 years, 1 month ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is Ideal gas equation?

Posted by Devilal Meena 3 years, 1 month ago

CBSE > Class 11 > Chemistry

5 answers

Saksham Thakur . 3 years ago

PV = nRT

1Thank You

Sharandeep Kaur 3 years ago

PV=nRT

1Thank You

Parnika Singh 3 years, 1 month ago

Pv = nRt

1Thank You

Geetanjali Chauhan 3 years, 1 month ago

PV=nRT

1Thank You

Shanika Sharma 3 years, 1 month ago

A gas which fulfills the gas laws is called an ideal gas. V×nt/p Pv=Rnt Pv=nRt

1Thank You

ANSWER

How to find electronic configuration

Posted by Sangeeta Kumari Sangeeta Kumari 3 years, 1 month ago

CBSE > Class 11 > Chemistry

1 answers

Krish Agrawal 3 years, 1 month ago

In the first circle of we take 2 atoms in second circle we take 8 atoms...This depends on the atomic number of a Element For example-We take Oxygen(O²),the atomic number of oxygen is 8...So,in that 8 we should 2 atoms in the first circle now, 6 atoms left...At second circle we can hold 8 atoms maximum....So,there is 6 atoms left we should replace it to 2nd circle now two places left,so the valency of Oxygen should be 2 and the electronic configuration should be÷ K L 2 6

3Thank You

ANSWER

Page 8 of 485

myCBSEguide

myCBSEguide

Test Generator

CUET Mock Tests

Download myCBSEguide App

All Courses

Other Websites

CBSE Courses

Resources

Corporate

NCERT Solutions

CBSE Sample Papers