class 11 chemistry notes

Boyle’s Law | Gas Law – State of matter Gases

Boyle’s Law: Robert Boyle, in 1662, gave this law. It relates the pressure and volume of ideal gases at constant temperature and mass. It states “For a fixed mass of a gas, the volume is inversely proportional to the pressure at a constant temperature.”     Thus law can also be stated as: “For a fixed mass …

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Valence Concept and Orbital Concept – Concepts of chemical bonding

Explain the two concepts, which explain the chemical bonding?ANSWER:There are two concepts, which explain chemical bonding.A. The Valence ConceptB. The Orbital ConceptThe Valence Concept (Electric theory of valence) INTRODUCTION:G.N Lewis and W. Kossel in 1916, gave the electronic theory of valence. The Valence Concept: STATEMENT:It states that,“In the formation of a chemical bond, atoms take …

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Main Principles of Kinetic Molecular Theory of Gases – States of matter Gases Chemistry

Kinetic Molecular Theory of Gases: The kinetic molecular theory of gases explains the physical behaviour of gases. Main Principles of Kinetic Theory of Gases: It has the following main principles or postulates. All gases consist of molecules which are widely separated from each other. Space occupied by gas molecules is negligible as compared to space …

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Comparison of three states of matter – my Digital Kemistry

Matter: Anything that has mass, as well as volume, is called matter. Matter exists in four states i.e. solid, liquid, gas and plasma. Comparison of three states of matter Some Important Uses of Liquid Gases: Compressed natural gas (CNG) is used as fuel in vehicles. Liquid oxygen is used in hospitals for patients suffering from …

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Solubility, Reactions and nature of Ionic and Covalent Compounds – my Digital Kemistry

Effect of bonding on physical and chemical properties:             Physical properties depend upon intermolecular forces (Hydrogen bonding, Dipole-dipole forces & London dispersion forces). While chemical properties depend upon intramolecular forces (Chemical bonds). (i)       Solubility of Ionic and Covalent compounds: Solubility is based on the fact “like dissolve like”. e.g. ionic compounds are more soluble in …

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What is meant by dipole moment?

Dipole Moment (µ) definition:             “Product of charge +ve or –ve and distance between the centres of charges is called dipole moment” Dipole moment is the measure of separation of charges and also the measure of the polarity of bond and polarity of the molecule. Dipole moment Formula:                                     µ = q x r             where …

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Electrochemistry Free downloadable pdf Notes ( Full Chapter) – Chemistry

Chemistry Chapter Electrochemistry Notes ( Full Chapter) Watch Now -> What are oxidation and reduction? ( in Urdu / Hindi) Watch Now !! -> Oxidation state determination Tricks ( in Urdu / Hindi) Watch Now -> Balancing Redox reaction by Oxidation number method ( in Urdu / Hindi) -> How to balance a redox reaction …

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