Class Twelve Chemistry: Chemical Bonding and Shape of

Navneet Singh • Chemistry

Chemical Bonding and Shape of Molecules

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Electronic Theory of Valency and Bonding

INTRODUCTIONElectronic theory of valency was given by Gilbert N. Lewis and Walther Kossel. This theory of valency explains the main cause of chemical combination and c...

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ɐʇoʞdɐS ʇɐɹᴉq • Chemistry

ALKANES : PROPERTIES

PHYSICAL PROPERTIES OF ALKANES1) STATE: C1 - C4 = GAS C5 - C17 = COLOURLESS VOLATILE LIQUIDS C18 - ABOVE = WAXY SOLI...

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Ambikesh Kumar Sah • Chemistry

Metallurgy of Silver

Extraction of silver from ArgentiteThe chief ore of silver is argentite and silver is extracted by the hydrometallurgy process. The silver are is dissolved in cyanide ...

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Bikash Agrawal • Chemistry

Octane Number

Gasoline is used as a fuel in internal combustion engines of motor cars and airplanes. In such engines, a mixture of gasoline vapors and the air is compressed by a pis...

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Ambikesh Kumar Sah • Chemistry

Metallurgy of Copper

Extracting copper from its oresThe method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 ) are conve...

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Cyrus Roy • Chemistry

Collision Theory: For a Layman

Before understanding about collision theory, we need to learn as to how chemical reactions take place. We know that for a chemical change to occur, the breaking of pre...

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Navneet Singh • Chemistry

Bishesh Gautam • Chemistry

Sorry for my late response. I didn't used the mattrab for a week long due to practical exam.Simple cell is usually referred to as a cell from which chemical reaction is carried out by the help of e...

Define secondary standard solution with suitable examples.

1 Answer Helpful (2) 180 Views

Those solutions which are standardized by the titration with the primary standard solution are called a secondary standard solution.The examples of the secondary standard solution are:Decinormal H2...

Describe the preparation and purification of pure and dry chloroform in the laboratory.Give its action upon:heated silver.aq. KOHaniline in the presence of aq. NaOH

0 Answers Helpful (1) 164 Views

If a 0.04M solution of a weak acid is dissociated to 1.5%. Calculate the dissociation constant of acid.[Ans: 9x10-6]

1 Answer Helpful (0) 194 Views

Here is the solution dude.If 0.04 M solution of weak acid is dissociated to 1.5%. Calculate the dissociation constant of acid.

Riemann's green is a green pigment ZnO.CoO, which is obtained by heating a mixture of zinc oxide and cobalt nitrate or by the reaction of cobalt nitrate with either 3Zn(OH)2⋅ZnCO3 or zinc sulphate.

Why is sigma bond stronger than pi bond?

3 Answers Helpful (3) 175 Views

Sigma bond is formed due to the overlapping of orbitals along their intermolecular axis. This leads to the effective overlapping and high electron density along intermolecular axis.On the other han...

Define the terms system and surroundings.

0 Answers Helpful (0) 112 Views

pH of water at 24°c is 7. What effect does increase in temperature results in pH of water?1)pH will be more than 72) pH will be less than 73) pH will be equal to 74) can't be determined

1 Answer Helpful (3) 120 Views

Option 2 is correct ans .Dissociation of water is an endothermic reversible reaction.When temperature is increased , for an endothermic reaction in equilibrium , it shifts the equilibrium to forwa...

Chemical Bonding and Shape of Molecules

Electronic Theory of Valency and Bonding

ALKANES : PROPERTIES

Metallurgy of Silver

Octane Number

Metallurgy of Copper

Collision Theory: For a Layman

Aliphatic Amines and their Preparation

Aniline: Properties

Definition and Characteristics of Hybridization

IUPAC Naming : Naming of Aromatic compounds

Halogenation of Alkanes

What is the difference between a simple cell and a galvanic cell?

Sorry for my late response. I didn't used the mattrab for a week long due to practical exam.Simple cell is usually referred to as a cell from which chemical reaction is carried out by the help of e...

Define secondary standard solution with suitable examples.

Those solutions which are standardized by the titration with the primary standard solution are called a secondary standard solution.The examples of the secondary standard solution are:Decinormal H2...

Describe the preparation and purification of pure and dry chloroform in the laboratory.Give its action upon:heated silver.aq. KOHaniline in the presence of aq. NaOH

If a 0.04M solution of a weak acid is dissociated to 1.5%. Calculate the dissociation constant of acid.[Ans: 9x10-6]

Here is the solution dude.If 0.04 M solution of weak acid is dissociated to 1.5%. Calculate the dissociation constant of acid.

Mention the condition of precipitation in terms of solubility product and ionic product.

When, Ionic Product > Solubility product, precipitation occurs.

What is Riemann's green?

Riemann's green is a green pigment ZnO.CoO, which is obtained by heating a mixture of zinc oxide and cobalt nitrate or by the reaction of cobalt nitrate with either 3Zn(OH)2⋅ZnCO3 or zinc sulphate.

Why is sigma bond stronger than pi bond?

Sigma bond is formed due to the overlapping of orbitals along their intermolecular axis. This leads to the effective overlapping and high electron density along intermolecular axis.On the other han...

Define the terms system and surroundings.

pH of water at 24°c is 7. What effect does increase in temperature results in pH of water?1)pH will be more than 72) pH will be less than 73) pH will be equal to 74) can't be determined

Option 2 is correct ans .Dissociation of water is an endothermic reversible reaction.When temperature is increased , for an endothermic reaction in equilibrium , it shifts the equilibrium to forwa...

Chemical Bonding and Shape of Molecules

Electronic Theory of Valency and Bonding

ALKANES : PROPERTIES

Metallurgy of Silver

Octane Number

Metallurgy of Copper

Collision Theory: For a Layman

Aliphatic Amines and their Preparation

Aniline: Properties

Definition and Characteristics of Hybridization

IUPAC Naming : Naming of Aromatic compounds

Halogenation of Alkanes

What is the difference between a simple cell and a galvanic cell?

Sorry for my late response. I didn't used the mattrab for a week long due to practical exam.Simple cell is usually referred to as a cell from which chemical reaction is carried out by the help of e...

Define secondary standard solution with suitable examples.

Those solutions which are standardized by the titration with the primary standard solution are called a secondary standard solution.The examples of the secondary standard solution are:Decinormal H2...

Describe the preparation and purification of pure and dry chloroform in the laboratory.Give its action upon:heated silver.aq. KOHaniline in the presence of aq. NaOH

If a 0.04M solution of a weak acid is dissociated to 1.5%. Calculate the dissociation constant of acid.[Ans: 9x10-6]

Here is the solution dude.If 0.04 M solution of weak acid is dissociated to 1.5%. Calculate the dissociation constant of acid.

Mention the condition of precipitation in terms of solubility product and ionic product.

When, Ionic Product > Solubility product, precipitation occurs.

What is Riemann's green?

Riemann's green is a green pigment ZnO.CoO, which is obtained by heating a mixture of zinc oxide and cobalt nitrate or by the reaction of cobalt nitrate with either 3Zn(OH)2​⋅ZnCO3​ or zinc sulphate.

Why is sigma bond stronger than pi bond?

Sigma bond is formed due to the overlapping of orbitals along their intermolecular axis. This leads to the effective overlapping and high electron density along intermolecular axis.On the other han...

Define the terms system and surroundings.

pH of water at 24°c is 7. What effect does increase in temperature results in pH of water?1)pH will be more than 72) pH will be less than 73) pH will be equal to 74) can't be determined

Option 2 is correct ans .Dissociation of water is an endothermic reversible reaction.When temperature is increased , for an endothermic reaction in equilibrium , it shifts the equilibrium to forwa...

Riemann's green is a green pigment ZnO.CoO, which is obtained by heating a mixture of zinc oxide and cobalt nitrate or by the reaction of cobalt nitrate with either 3Zn(OH)2⋅ZnCO3 or zinc sulphate.