The strength of an acid depends upon the oxidation state of the central atom. More is the oxidation state higher is the acidic character. In case of HClO4(perchloric acid) the oxidation state of chlorine is +7. And in case of H2SO4 (sulphuric acid) the oxidation state of Sulphur is +6 . The oxidation state ofContinue reading “Why Perchloric acid is stronger than sulphuric acid ?”
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What is hydrogen bond? How does an intermolecular hydrogen bond differ from intramolecular hydrogen bond ?
Actually the hydrogen bond is simply a type of attraction which is caused by the the electronegativity difference between hydrogen and highly electronegative element like oxygen carbon nitrogen and fluorine. Intermolecular hydrogen bonding takes place between two molecules having hydrogen and electronegative element. Hydrogen is attracted by the electronegative element of another molecule for exampleContinue reading “What is hydrogen bond? How does an intermolecular hydrogen bond differ from intramolecular hydrogen bond ?”
Why is carbon important for forming complicated molecules? Or why carbon makes a large number of molecules ?
The answer to this question is very simple . There are two major reasons behind it. 1. Catenation :- It is the property by which the carbon can make long chains, branched chains and ring or cylic structural by joining with its own atoms. Due to this it can make a variety of molecules. 2.Continue reading “Why is carbon important for forming complicated molecules? Or why carbon makes a large number of molecules ?”
Preparation of chlorobenzene – Sandmeyer’s reaction
Chlorobenzene and bromobenzene can be prepared by treating bezenediazonium chloride with cuprous chloride or cuprous bromide. This reaction is also called Sandmeyer’s reaction. The reaction is named after the Swiss Chemist Traugott Sandmeyer. In this reaction the diazonium group losses the molecule of dinitrogen and it yields chlorobenzene.
What is Raoult’s law ?
It states that for a solution of volatile components, the partial vapour pressure of each component is directly proportion to the mole fraction of the component in the solution.
Explanation of Schottky defect, Frankel defect, Interstitial defect and F-centres.
1. Schottky defect:- In this kind of defect equal number of cations and anions are missing from the crystal lattice. Due to this the vacant sites or the holes are present in the lattice. This kind of defect is present in the ionic compounds with high coordination number and equal size of ions. Density ofContinue reading “Explanation of Schottky defect, Frankel defect, Interstitial defect and F-centres.”
Covalent bonds versus ionic bonds.
There are two types of bonds that can be formed Either by sharing of electrons , that is covalent bond. Or 2. By transfer of electrons , that is ionic bond. Now the question is that , why to go for covalent bond? An important aspect of ionic bond is that the difference of electronegativityContinue reading “Covalent bonds versus ionic bonds.”
A Short intro to acid, base and indicators.
Acid base and salts Acids:- these are the substances that Are sour in taste. Turn blue litmus red. Give H+ ions. Can accept a pair of electrons. Base :- These are the substances that Are bitter in taste. Turn red litmus blue. Soapy in touch. Give OH– ions. How to recognise the acid and bases?Continue reading “A Short intro to acid, base and indicators.”
Which is more acidic ortho methyl phenol or phenol?
the phenol is more acidic as compared to ortho methyl phenol because the methyl group is electron releasing group which will increase the electron density in the ring as well as on the carbon atom attached to -OH (hydroxyl group) thus -OH group will not release the H+ ion. but in case of phenol thereContinue reading “Which is more acidic ortho methyl phenol or phenol?”