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

Neon has a bond order of zero(Anti bonding orbitals=bonding orbital electron) as the molecular orbital of neon is completely filled hence no bond is form in neon thus the molecule doesn't exist

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If wood is burnt in air which is a limiting reagent in this case ? a) oxygen,wood,co2,water

Posted by Varun Pandat 4 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Devesh Amar 4 years, 6 months ago

Because wood burunt completely

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Devesh Amar 4 years, 6 months ago

Wood

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CH4 can't be written as H4C , WHY ? ? ans me plz

Posted by Vaishali ..... 4 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Anay Studies 4 years, 5 months ago

Since its more convenient to use and C have alphabetically lesser position than H

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Vishwa Hinge 4 years, 6 months ago

As the no. Of atom in each element are almost same therefore they can be return in reverse form

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What is wavelength

Posted by Shaily Joshi 4 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Ankur Yadav 4 years, 6 months ago

Distance covered in one complete oscillation by a body .

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Prabal Das 4 years, 6 months ago

Distance between two consecutive crest or trough

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Out of Ortho and para nitro phenol which is more volatile and why?

Posted by Payal Jangir 4 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Prabal Das 4 years, 6 months ago

O nitrophenol is more volatile because in o nitrophenol intramolecular h bond occurs whereas in p nitrophenol h bond is not so significant

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Write M.O.I for O2+ and O2-

Posted by Payal Jangir 4 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

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Write M.O.I for o2

Posted by Payal Jangir 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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Cohesive force of 1st group elements

Posted by Sadhna Jain 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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Write Dalton Law of pascal pressure class11

Posted by Sadhna Jain 4 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Ankur Yadav 4 years, 6 months ago

If two or more non reacting gases are kept in a closed container then sum of their partial pressure is equal to net pressure. P=P1+P2+........... where partial pressure=(mole fraction)*net pressure.

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Explain bohrs model

Posted by Sadhna Jain 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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Calculate the volume of 1gm hydrogen at standard temperature and pressure

Posted by Deeksha Deora 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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. HBr on reaction with Propene forms 2-Bromopropane as the major product, while the same reaction yields 1-Bromopropane as the major product when the reaction is carried out in the presence of peroxide. Explain with the help of mechanism.

Posted by Tejasav Kapoor 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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For the reaction 2A(g) + B (g) → 2D (g), ∆ U o = - 20.5 KJ and ∆ So = - 50.00 JK-1 Calculate ∆Go for the reaction and predict whether the reaction is spontaneous or not. (R= 8.314 Jmol-1K -1 , T=300 K)

Posted by Saurav Rajput 4 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Anay Studies 4 years, 5 months ago

-1018.7 spontaneous

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Calculate ∆Go for the reaction and predict whether the reaction is spontaneous or not. (R= 8.314 Jmol-1K -1 , T=300 K)

Posted by Saurav Rajput 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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Complete the following reactions: (i)CO(g) + 2H2 ⎯⎯Δ→CH3OH (ii)C3H8 (g) +3H2O ⎯⎯Δ→3CO + 7H2 (iii)Zn(s) + 2NaOH(aq) ⎯⎯Δ→Na2ZnO2 + H2 What is water-gas shift reaction? Give its chemical equation

Posted by Chesta Gupta 4 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Mamali Mishra 4 years, 6 months ago

CO + 2H2O = CO2 + 2H2, this is water gas shift reaction

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How can the production of dihydrogen, obtained from ‘coal gasification’, be increased?

Posted by Chesta Gupta 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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A sample of pure PCl5 was introduced into an evacuated vessel at 473 K. After equilibrium was reached, the concentration of PCl5 was found to be 0.5 x 10-1 mol L-1. If Kc is 8.3 x 10-3 what are the concentrations of PCl3 and Cl2 at equilibrium?

Posted by Chesta Gupta 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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How do you expect the metallic hydrides to be useful for hydrogen storage? Explain

Posted by Chesta Gupta 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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Define Markovnikovs rule with suitable example.Also write the mechanism of reaction.

Posted by Chesta Gupta 4 years, 6 months ago

CBSE > Class 11 > Chemistry

3 answers

Anay Studies 4 years, 5 months ago

Its simple A reaction with unsymmetrical alkene when attacked by H+X-, The X- attacks the + atom of the alkene as CH3-CH=CH2 on reacting with HCl gives CH3-CH-Cl-CH3

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Payal Jangir 4 years, 6 months ago

I hope it helps you

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Payal Jangir 4 years, 6 months ago

Markovnikovs rule: According to this rule, -ve part of attendum gives to that double bonded c-atom which contain least no. of H-atom. Rxn intermediate- Carbonation

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Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example

Posted by Chesta Gupta 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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Convert ethane to ethyne

Posted by Blessy Simran 4 years, 6 months ago

CBSE > Class 11 > Chemistry

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What is molecular orbital theory (MOT]

Posted by Chinmay Suthar 4 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Jagdish 4 years, 6 months ago

Molecular orbital theory states that after forming molecule, electrons do not continue to revolve in atomic orbitals rather they start revolving in newly formed molecular orbitals which are around two or more nuclei of the participant atoms. It also explains the paramagnetic, diamagnetic properties as well as existence of some Diatomic molecules.

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In the hydrocarbon CH3− CH2−CH = CH − CH2−C ≡ CH

Posted by Het Brahmbhatt 4 years, 6 months ago

CBSE > Class 11 > Chemistry