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How domestic waste can be used as manure

Posted by Harman Gill 7 years ago

CBSE > Class 11 > Chemistry

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Explain why carbon differs from rest of family members

Posted by Gurmel Waraich 7 years ago

CBSE > Class 11 > Chemistry

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Riya Raheja 7 years ago

As its shows property of catenation(self linking property of carbon).

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Calculate the number of molecules present in 1L Methane at stp

Posted by L E O 5 years, 11 months ago

CBSE > Class 11 > Chemistry

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Define catenation?

Posted by Siraj Ahmad 7 years ago

CBSE > Class 11 > Chemistry

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Yogita Ingle 7 years ago

i) The tendency of formation of long open or closed atom chains by the combination of same atoms in themselves is known as catenation.

(ii) The catenation is maximum in carbon and decreases down the group.

(iii) This is due to high bond energy of catenation.

(iv) Only carbon atoms also form double or triple bonds involving pπ-pπ multiple bond within itself.

> C = C<; – C ≡ C –

(v) Carbon also possesses the tendency to form closed chain compounds with O, S and N atoms as well as forming pπ-pπ multiple bonds with other elements particularly nitrogen and oxygen e.g. C =O; C=N; C ≡ N; C = S are the functional groups present in numerous molecules due to this reason.

(vi) Carbon can form chain containing any number of carbon atoms Si and Ge cannot extend the chain beyond 6 atoms, while Sn and Pb do not form chains containing more than one or two atoms.

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Explain Friedel craft reaction..

Posted by Abc ?⏳ 7 years ago

CBSE > Class 11 > Chemistry

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Macherla Indupriya 7 years ago

How can we send a pic

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Yogita Ingle 7 years 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.

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If a certain oxide of nitrogen weighing 0.11 g gives 56ml of nitrogen and another oxide of nitrogen weighing 0.15g gives the same volume of nitrogen show that these results support the law of multiple proportions

Posted by Aditya Dangi 7 years ago

CBSE > Class 11 > Chemistry

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3d exist but 2d not exist why?

Posted by Nitin Passiwal Passiwal 7 years ago

CBSE > Class 11 > Chemistry

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Isha Chandra 7 years ago

Bcz the value of l must be less than the value of n and d(2) which is equal to the value of n(2). Therefore it doesn't exist.

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What is law of mass action

Posted by Pratyush Kumar 7 years ago

CBSE > Class 11 > Chemistry

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Yogita Ingle 7 years ago

Guldberg and Waage established a relationship between rate of chemical reaction and the concentration of the reactants or, with their partial pressure in the form of law of mass action. According to this law,
“The rate at which a substance reacts is directly proportional to its active mass and rate of a chemical reaction is directly proportional to product of active masses of reactants each raised to a power equal to corresponding stoichiometric coefficient appearing in the balanced chemical equation”.

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Energy level daigram for moleculer orbital

Posted by Vishal Garg 7 years ago

CBSE > Class 11 > Chemistry

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What is rechartle principle

Posted by Atul Singh 7 years ago

CBSE > Class 11 > Chemistry

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Pratyush Kumar 7 years ago

It is Le-Chatliers Principle Ans:-If equilibrium is disturbed by an external factor like pressure, temp, conc then equilibrium will shift in that direction in which it will be more stable Or we say to achieve stability

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Why cp is always greater than cv

Posted by Priyanshu Singh 7 years ago

CBSE > Class 11 > Chemistry

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Gaurav Seth 7 years ago

The heat capacity at constant pressure CP is greater than the heat capacity atconstant volume CV , because when heat is added at constant pressure, the substance expands and work. QV = CV △T = △U + W = △U because no work is done. Therefore, dU = CV dT and CV = dU dT .

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How many electrons in zn (30) have n+1 value equal to 4

Posted by Navneet Kaur 7 years ago

CBSE > Class 11 > Chemistry

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How a metal X is treated with cold water,it gives a basic salt Y with molecular formula XOH,molecular mass=40 and liberates a gas Z which easily catches fire.Identify X,Y,Z. Also write the chemical equation for that.

Posted by Taman Deep 7 years ago

CBSE > Class 11 > Chemistry

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Calculate the no. Of radial nodes for 4p-orbital

Posted by Sibananda Sahu 7 years ago

CBSE > Class 11 > Chemistry

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Calculate the number of radial nodes for40p-orbital

Posted by Sibananda Sahu 7 years ago

CBSE > Class 11 > Chemistry

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Why acetylene is more acidic than Ethene

Posted by Urva Mane 7 years ago

CBSE > Class 11 > Chemistry

1 answers

Raman Kant 7 years ago

Due to sp hybridisation on C2H2

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Lewis concept in equilibrium reaction

Posted by Samya Parmar 7 years ago

CBSE > Class 11 > Chemistry

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Give reason PCL5 is ionic in solid state

Posted by Hd Movies Bollywood 7 years ago

CBSE > Class 11 > Chemistry

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Calculate all quantum number for 8th electron in Mg atom

Posted by Ankur Tiwari 7 years ago

CBSE > Class 11 > Chemistry

1 answers

Chirag Sharma 7 years ago

In Mg electronic configuration 1s2 2s2 2p6 3s2 8 electron in p subshell So n=2 l=1 (as p subshell) ms=-1/2

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Zeroth law of thermodynamics

Posted by Om Prakash Baraik 7 years ago

CBSE > Class 11 > Chemistry

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Riya Sharma 7 years ago

When two systems are in thermal equilibrium with another system then they are also in thermal equilibrium with each other

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Gaurav Seth 7 years ago

Zeroth law of thermodynamics states that when the thermodynamic systems A and B are separately in thermal equilibrium with a third thermodynamic system C, then the systems A and B are in thermal equilibrium with each other also.

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How are 0.5m of NaOH different from 0.5M of NaOH

Posted by Binay Kumar 5 years, 11 months ago

CBSE > Class 11 > Chemistry