class 11 chemistry notes

Detection of Carbon and Hydrogen in an Organic Compound – Organic Chemistry

Do you know !! Qualitative analysis is a method that is used to detect the elements present in an organic compound. The main elements present in organic compounds are carbon, hydrogen as well as Nitrogen, Sulphur and Halogens. The following method is used for the detection of carbon and hydrogen in the organic compound. Detection …

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Destructive distillation of Coal Experiment – Organic Chemistry

Strong heating of coal in the absence of air or oxygen is called destructive distillation. Coal (Fossil Fuel): Coal is an important solid fossil fuel. Destructive distillation of coal provides useful by-products. The fundamental by-products are: • coke • coal tar • ammoniacal alcohol • coal gas Destructive Distillation of Coal Experiment: Let’s understand the …

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Destructive distillation of Coal

What is the Destructive distillation of Coal?  When coal is heated in absence of air, its destructive distillation or carbonization occurs. Main Products obtained from Destructive Distillation: Destructive distillation of coal produces the following products. Coal gas: Coal gas is also called town gas. It is a mixture of H2, CO, and CH4. Hydrogen and …

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How do you calculate bond length – Class 11 Chemistry Notes

Bond Length Definition: “The distance between the nuclei of two atoms bonded together through a single covalent bond is called bond length.” Bond Length Calculations: C ─ C bond length in aliphatic hydrocarbons as well as in diamond is 154 pm (1.54 x 10-10 m) In case of bond between identical atoms the bond length is …

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What is Bond Energy with Examples -Bond energy Calculations

Do you know !! Bond energy is the measure of strength of bond. Polar bonds are stronger than non-polar bonds. Bond Energy Definition:             “The energy required for breaking one mole of bonds or energy released during formation of one mole bonds is called bond energy” Bond Energy Unit: S.I unit for bond energy is …

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How to draw Molecular Orbital Diagram of Li2 , Li 2+ , Li2 -|Chemistry

Do you know !! Lithium belongs to group 1 ( alkali metals), period 2 s-block element of the periodic table. Lithium is represented by the symbol “Li”. The atomic number of Lithium (Li ) is 3 and the mass number is 6.941. Li Electronic Configuration: The distribution of electrons in lithium electronic shells are as …

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Class 11 Chemistry States of Matter Gases Important mcqs for Exams

Class 11 Chemistry States of Matter Gases Important multiple choose questions: At absolute zero, molecules of hydrogen gas have energy: 1. Translational only 2. Rotational only 3. Vibrational only 4. None of these Answer ) None of these Brief Explanation : Absolute zero is the lowest possible temperature at which no gas can exist in …

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How to draw Molecular Orbital Diagram of O2 | Simplest Trick – Chemistry

Molecular orbital (MO) theory explains the construction of molecular orbital diagram on the basis of following main points . 1.Formation of MOs: Atomic orbitals(AOs) linearly combine with each other to form equal number of molecular orbitals (MOs). 2.Energy of MOs: Half of the molecular orbitals (MOs) having energy lower than the atomic orbitals are called …

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