This post includes the topics of Class 9 Chapter 4 Structure of Atom, i.e., Cathode rays and the JJ Thomson model and the discovery of electron. Atoms are too small to be seen even with the most powerful microscope and, too light to be weighed even on the most sensitive balance. In this chapter, we […]
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Substitution reaction is the basic types of organic reaction which possess primary importance in the field of organic chemistry. What is substitution reaction? This reaction is defined as a reaction in which the functional group of one chemical compound is substituted by another group or it is a reaction which involves the replacement of one
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In this post, we will discuss about the Hinsberg test, preparation of hinsberg reagent, its principle and procedure for the test. The mechanism for the hinsberg test is also discussed. What is Hinsberg Test? Hinsberg test is a chemical reaction that can distinguish between primary, secondary, tertiary amines. The amine is shaken well with Hinsberg
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In this article, you will find 11 tricks with the reaction road map in addition to the tricks for aromatic conversion reactions for the conversion in organic chemistry for class 12 board exams. What is conversion reaction? In conversion reactions, we have to convert one organic compound to another organic compound. It occurs in a
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Chemical Reactions and Equations question answer are provided in this post including NCERT questions also. Why should a magnesium ribbon be cleaned before burning in air ? Answer: Magnesium gets covered with a layer of magnesium oxide when kept in air for a long time. This layer hinders the burning of magnesium. Hence, it is
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The short notes for the chapter Chemical Reaction and Equation are as follows: The representation of chemical reaction by means of symbols of substances in the form of formulae is called chemical equation.For example N2 + 3H2 ⇌ 2NH3 A balanced chemical equation has equal number of atom of each element participating in the reaction on both
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This question is from Organic chemistry section of JEE Advance 2019. First time when you see this question, it looks a bit difficult. Don’t lose your confidence. I’ll tell you how easy it is. We have to apply the basic organic reactions and named reactions, that’s it!! In this question, set of reactions are given
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What is base? According to Lewis theory of acids and bases, a base is the one which has the availability of electrons to donate to an acid. Here, we need to find the stronger base among benzyl amine and aniline. A stronger base will be the one whose electrons are easily available for donation. Structure
Which is more basic in nature? Benzyl amine or aniline. Read More »
It is a question based on stoichiometric calculation. How many moles of UF6 would have to be decomposed to provide enough fluorine to prepare 1.25 mol of CF4 ? (Assume sufficient carbon is available) Solution: The chemical reaction occurs is: UF6→ U + 3F2 ……….. (1) C + 2F2→ CF4 ……….. (2) From reaction (2),
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How many moles of lead(II) chloride will be formed from a reaction between 6.5 g PbO and 3.2 g HCl? Solution: The reaction between PbO and HCl is: PbO + 2 HCl → PbCl2+ H2O From the reaction it is clear that 1 mole PbO reacts with 2 mole of HCl. Now, moles of PbO = Given
