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The Nobel Prize in Chemistry (2000-2020)

Chemistry Nobel prizes(2000-2020) The Nobel prize in Chemistry has been awarded 111 times to 184 Nobel Laureates between 1901 and 2019. Sanger is that the only Nobelist who has been awarded the Nobel prize in Chemistry twice, in 1958 and 1980. this suggests that a complete of 183 individuals have received the Nobel prize in Chemistry. The Nobel prize in Chemistry 2020 The 2020 Nobel prize in Chemistry has not been awarded yet. it'll be announced on Wednesday 7 October, 11:45 CEST at the earliest The Nobel prize in Chemistry 2019 John B. Goodenough, M. Stanley Whittingham and Akira Yoshino “for the event of lithium-ion batteries” The Nobel prize in Chemistry 2018 Frances H. Arnold “for the directed evolution of enzymes”, George P. Smith and Sir Gregory P. Winter “for the phage display of peptides and antibodies” The Nobel prize in Chemistry 2017 Jacques Dubochet, Joachim Frank and Richard Henderson “for developing cryo-electron micros

Ncert Class 12th Solution part-2

Chemistry Chapter -Solution Part-2 How do you find the molar mass of Colligative properties? How do you find the molar mass of a solute? How do you determine Colligative properties? How do you find the molecular weight of an unknown compound? Topics to be covered in this Post Molality Molarity Normality Mole fraction Colligative properties Molality:- It is defined as the total moles of solute dissolved in the weight of the solvent . Molality = Number of moles of solute/weight of solvent in (k.g.) It is denoted by "m" Its unit is moles/kg. Molarity:- It is defined as total number of moles of solute dissolved in the volume of the solution. Molarity = Number of moles of solute/volume of solution(ltr) It is denoted by "M" its unit is moles/ltr Normality = It is defined as the number o

NCERT Solutions For Class 12 Chemistry Chapter 2 Solutions

Solution As per the syllabus, what do we learn in Class 12 Chemistry Chapter 2 - Solutions? How important is the class 12 chemistry Chapter 2 - Solution is as per the examination? What are the steps to score well in Class 12 Chemistry? Topics:- Intro Types of solution according to components. Types of solution according to solvent and solute. Factor affecting solubility of the solution. Ideal and the non-ideal solution. Henry law. Raoult's law. Similarities and differences in raoult's and henry law. Solution:- Solution is a mixture of two or more components Like Solute and Solvents. Solute:- Component of the Solution present in less amount, is known as solute. Solvent:- Component of the solution present in excess amount, is known as Solvent. => According to number of components type of Solution :- Binary solution:- Solution is prepared by two components, is called Binary solution. Tertiary solution:- Solution is prepared by three compo

Carboxylic Acids-Chemical Properties - Esterification

Carboxylic Acids-Chemical Properties - Esterification Carboxylic Acid Chemical Properties of Carboxylic Acids:- Esterification :- When alcohols or phenols react with carboxylic acids then esters are formed in the presence of concentration. H2SO4 or HCl as a catalyst. Carboxylic Acids-Chemical Properties Esterification Reaction with PCl5, SOCl2:- When the hydroxyl group of the carboxylic acid is easily replaced by chlorine atom when it is treated by (PCl_5), (SOCl_2) as the products which are produced are gaseous in nature and can escape from the reaction mixture making the purification easier. Reaction with PCl5 Reduction:- With diborane, NaBH4, and lithium aluminum hydride, carboxylic acids are reduced to primary alcohols. Reduction Carboxylation:- Carboxylic acids lose carbon dioxide to form hydrocarbons when their sodium salts are heated with soda-lime and this the reaction is called decarboxylation. Carboxylation Halogen

CBSE Class 12 || Chemistry in Everyday Life || Full Chapter

Chemistry in everyday life Medicines or Drugs :- The chemical substances helping of human body or an animal either from tratment of disease or to reduce suffering from pains,are called Medicines or Drugs . Chemotherpy :- The branch of science which deals with the study of tratment of disease using medicines ,is known as chemotherpy :- e.g. Cancer tratment. Classification of Medicines :- Antiseptics :- The medicines which are used to bring down the body temperature during high fever .e.g. Paracetamol,Novalgin,Quninoe,Aspirin,etc. Aspirin NOte :- Paracetamol is prefered over aspirin as an antipyretics beacause aspirine gets hydrolysed in the stomach to salicyclic acid,which causes "Ulcer" in stomach from where bleeding may take place. Paracetamol Antimalarials :- The medicines which are used to br

Surface Chemistry

Surface Chemistry Surface Chemistry is the branch of chemistry which deals with the phenomenon that occurs on the surfaces or interfaces, such phenomenon includes corrosion. catalysis, crystallisation, etc Adsorption Adsorption Due to unbalanced attraction forces, accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. The molecular species accumulates at the surface is termed as adsorbate and the material on the surface of which the adsorption takes place is called adsorbent, e.g.. (i) O2, H2, C12, NB3 gases are adsorbed on the surface of charcoal. (ii) Silica gels adsorb water molecules from air. Charcoal, silica gel, metals such as Ni, Cu, Ag, Pt and colloids are some adsorbents. Important Characteristics of Adsorption It is specific and selective in nature. 2. Adsorption is spontaneous process, therefore change in free e