National German Competition
... q) Write down the equation of the reaction of compound 1 with lithium dimethylcuprate and water. Give the complete names of the alcohols. Zinc organic compounds are longer known and more often used. These compounds are applied to synthesize alcohols, more exactly in the synthesis of hydroxy esters. ...
... q) Write down the equation of the reaction of compound 1 with lithium dimethylcuprate and water. Give the complete names of the alcohols. Zinc organic compounds are longer known and more often used. These compounds are applied to synthesize alcohols, more exactly in the synthesis of hydroxy esters. ...
Concept based notes Chemistry Lab Manual
... Q. 95. What are the mobile and stationary phases in the paper chromatography? Ans. Water absorbed on cellulose constituting the paper serves as the stationary phase and organic solvent as mobile phase. Q. 96. What is meant by Rf value? Ans. Retention factor (Rf ) of a substance is defined as the rat ...
... Q. 95. What are the mobile and stationary phases in the paper chromatography? Ans. Water absorbed on cellulose constituting the paper serves as the stationary phase and organic solvent as mobile phase. Q. 96. What is meant by Rf value? Ans. Retention factor (Rf ) of a substance is defined as the rat ...
Basic chemistry help is available here for high school or college
... classroom students. All hard copy materials distributed under this exception must have on every page distributed reference to http://www.chemtutor.com as source. Under the same exception granted to classroom teachers, full recognition of Chemtutor must be given when all or any part is included in an ...
... classroom students. All hard copy materials distributed under this exception must have on every page distributed reference to http://www.chemtutor.com as source. Under the same exception granted to classroom teachers, full recognition of Chemtutor must be given when all or any part is included in an ...
Chemistry - SSA Punjab
... HCl is a covalent compound but it ionises in the solution? The molecule of CO2 is linear whereas that of SnCl2 is angular why? Give molecular orbital energy level diagram of CO. Write its electronic configuration, magnetic behaviour and bond order. How is ionic bond formed? On what factors it depend ...
... HCl is a covalent compound but it ionises in the solution? The molecule of CO2 is linear whereas that of SnCl2 is angular why? Give molecular orbital energy level diagram of CO. Write its electronic configuration, magnetic behaviour and bond order. How is ionic bond formed? On what factors it depend ...
HOTS Worksheet
... Q. 1. Write an equation for the Chemistry involved when a drop of hydrochloric acid make a hole in nylon stockings. Ans. The (— CO — NH —) amide bond in nylon gets hydrolysed. Q. 2. Fibres are of crystalline structure. Why ? Ans. Fibres have strong intermolecular forces of attraction which leads to ...
... Q. 1. Write an equation for the Chemistry involved when a drop of hydrochloric acid make a hole in nylon stockings. Ans. The (— CO — NH —) amide bond in nylon gets hydrolysed. Q. 2. Fibres are of crystalline structure. Why ? Ans. Fibres have strong intermolecular forces of attraction which leads to ...
chemistry - Brilliant Public School Sitamarhi
... i is van't Hoff factor, Tb is elevation in boiling point, Kb is molal elevation constant and MA is molar mass of solvent ...
... i is van't Hoff factor, Tb is elevation in boiling point, Kb is molal elevation constant and MA is molar mass of solvent ...
MEDICAL CHEMISTRY STUDY GUIDE
... 4.2.2. Preparation of 0.1N solution of sodium carbonate using the Na2CO3·10H2O as a solid substance. Calculate the mass of solid needed for the preparation of V cm3 solution given concentration. Weigh the required amount of substance. Insert funnel in volumetric flask V cm3 and transfer sample of ma ...
... 4.2.2. Preparation of 0.1N solution of sodium carbonate using the Na2CO3·10H2O as a solid substance. Calculate the mass of solid needed for the preparation of V cm3 solution given concentration. Weigh the required amount of substance. Insert funnel in volumetric flask V cm3 and transfer sample of ma ...
Lab Manual (Eng. Medium)
... Graduated or volumetric pipettes can be used to measure accurately relatively small quantities of a liquid. Suction is required to draw the liquid into a pipette. However, suction by mouth is unwise because of the danger of drawing toxic or corrosive liquids into the mouth. An adaptor should be used ...
... Graduated or volumetric pipettes can be used to measure accurately relatively small quantities of a liquid. Suction is required to draw the liquid into a pipette. However, suction by mouth is unwise because of the danger of drawing toxic or corrosive liquids into the mouth. An adaptor should be used ...
evaluation copy
... Purchase of PASCO’s Advanced Chemistry through Inquiry includes a classroom license entitling one teacher at one school campus to reproduce and distribute the student handouts for use by his or her students. Each teacher is required to have his or her own licensed material, but may use the material ...
... Purchase of PASCO’s Advanced Chemistry through Inquiry includes a classroom license entitling one teacher at one school campus to reproduce and distribute the student handouts for use by his or her students. Each teacher is required to have his or her own licensed material, but may use the material ...
CHEMICAL AND PROCESS DESIGN HANDBOOK
... Chemicals are part of our everyday lives. The hundreds of chemicals that are manufactured by industrial processes influence what we do and how we do it. This book offers descriptions and process details of the most popular of those chemicals. The manufacture of chemicals involves many facets of chem ...
... Chemicals are part of our everyday lives. The hundreds of chemicals that are manufactured by industrial processes influence what we do and how we do it. This book offers descriptions and process details of the most popular of those chemicals. The manufacture of chemicals involves many facets of chem ...
Problem 1-2
... on Earth, intensely stirred and then the pH is measured at 0 °C? The calculation should be carried out on the one hand with and on the other hand without considering the autoprotolysis of water. ...
... on Earth, intensely stirred and then the pH is measured at 0 °C? The calculation should be carried out on the one hand with and on the other hand without considering the autoprotolysis of water. ...
Experiment 7: Determination of the concentration of a solution of an
... 6. All solids must be discarded in the bins at the outer ends of each bench. Do not throw matches, paper, or any insoluble chemicals into the sink. Liquids must be discarded into the ceramic sinks or designated disposal bottles. ...
... 6. All solids must be discarded in the bins at the outer ends of each bench. Do not throw matches, paper, or any insoluble chemicals into the sink. Liquids must be discarded into the ceramic sinks or designated disposal bottles. ...
PART 3-ICHO 11-15
... a) aluminium ammonium sulphate with baryta water, b) potassium chromate, ferrous chloride and sulphuric acid, c) calcinated soda and sodium hydrogen sulphate, d) 4-bromoethyl benzene and chlorine, e) n-propyl alcohol, phenol and concentrated sulphuric acid? Write ionic equations for the reactions th ...
... a) aluminium ammonium sulphate with baryta water, b) potassium chromate, ferrous chloride and sulphuric acid, c) calcinated soda and sodium hydrogen sulphate, d) 4-bromoethyl benzene and chlorine, e) n-propyl alcohol, phenol and concentrated sulphuric acid? Write ionic equations for the reactions th ...
Ans:- (i) Gluconic acid - Kendriya Vidyalaya No.2, Kribhco, Surat
... Q-6. Write an expression that relates the molar conductivity of a wek electrolyte to its degree of dissociation. Ans-. Degree of dissociation(αe )= Λem / Λωm ...
... Q-6. Write an expression that relates the molar conductivity of a wek electrolyte to its degree of dissociation. Ans-. Degree of dissociation(αe )= Λem / Λωm ...
Industrial Zinc Plating Processes
... The metal deposit distribution is affected by the variation of the cathode efficiency with current density. In plating solutions in which the cathode efficiencies decrease rapidly as current density increases, excess deposits will plate on edges and corners. This phenomenon is coined throwing power. ...
... The metal deposit distribution is affected by the variation of the cathode efficiency with current density. In plating solutions in which the cathode efficiencies decrease rapidly as current density increases, excess deposits will plate on edges and corners. This phenomenon is coined throwing power. ...
National German competition
... platinum-hydrogen electrode is E0 = 0 V for the activity of the NH4+ ions a(NH4+) = 1 mol·L-1. An Ag/AgCl/KCl-electrode having the potential of E0 = 0.681 V at - 40°C is used as a reference electrode. In an ammoniacal solution of acetic acid having the concentration of c(CH3COOH) = 10–3 mol·L-1 the ...
... platinum-hydrogen electrode is E0 = 0 V for the activity of the NH4+ ions a(NH4+) = 1 mol·L-1. An Ag/AgCl/KCl-electrode having the potential of E0 = 0.681 V at - 40°C is used as a reference electrode. In an ammoniacal solution of acetic acid having the concentration of c(CH3COOH) = 10–3 mol·L-1 the ...
View/Open
... As a consequence of these reactivity differences, it’s usually possible to convert a more reactive acid derivative into a less reactive one. Acid chlorides, for instance, can be directly converted into anhydrides, thioesters, esters, and amides, but amides can’t be directly converted into esters, th ...
... As a consequence of these reactivity differences, it’s usually possible to convert a more reactive acid derivative into a less reactive one. Acid chlorides, for instance, can be directly converted into anhydrides, thioesters, esters, and amides, but amides can’t be directly converted into esters, th ...
Topic 6 Section C
... Option A —The reaction between sulphur dioxide and oxygen is reversible. The percentage yield of sulphur trioxide is about 98%. Option B —The conversion of sulphur dioxide into sulphur trioxide is carried out at ...
... Option A —The reaction between sulphur dioxide and oxygen is reversible. The percentage yield of sulphur trioxide is about 98%. Option B —The conversion of sulphur dioxide into sulphur trioxide is carried out at ...
engineering chemistry
... An atom is the smallest form of a chemical particle that retains the properties of the particle. The word 'atom' comes from the Greek word 'atomos', meaning 'unable to be cut'. The original meaning of atom was the smallest, indivisible form of a chemical particle. Now we know how to divide atoms int ...
... An atom is the smallest form of a chemical particle that retains the properties of the particle. The word 'atom' comes from the Greek word 'atomos', meaning 'unable to be cut'. The original meaning of atom was the smallest, indivisible form of a chemical particle. Now we know how to divide atoms int ...
Ch 18 Power Point
... vessel. But it does not change the partial pressures of the reaction gases present. • Increasing pressure by adding a gas that is not a reactant or a product cannot affect the equilibrium position of the reaction system. © Houghton Mifflin Harcourt Publishing Company ...
... vessel. But it does not change the partial pressures of the reaction gases present. • Increasing pressure by adding a gas that is not a reactant or a product cannot affect the equilibrium position of the reaction system. © Houghton Mifflin Harcourt Publishing Company ...
Study materials of Chemistry for class XII
... With phosphorus which is pentavalent, four of its electrons are involved in bound formation with silicon and the fifth valence electron is free to conduct for conduct electricity. This type of semiconductor is called n-type semiconductor. (ii) With gallium which is trivalent, three bounds are formed ...
... With phosphorus which is pentavalent, four of its electrons are involved in bound formation with silicon and the fifth valence electron is free to conduct for conduct electricity. This type of semiconductor is called n-type semiconductor. (ii) With gallium which is trivalent, three bounds are formed ...
Synthesis and Structural Studies of Calcium and Magnesium
... reaction conditions to obtain X-ray quality crystals of the reaction products to allow for structural elucidation of the novel compounds. Various methodologies to aid in crystal growth including hydrothermal methods and gel crystallization were employed. We have used phosphinate and phosphonate liga ...
... reaction conditions to obtain X-ray quality crystals of the reaction products to allow for structural elucidation of the novel compounds. Various methodologies to aid in crystal growth including hydrothermal methods and gel crystallization were employed. We have used phosphinate and phosphonate liga ...
Grade XII Unit 1 - Ethiopian Ministry of Education
... Mixtures are combinations of two or more substances in which each substance retains its own chemical identity and hence its own properties. A sample of clean air, for example, consists of many elements and compounds physically mixed together, including oxygen (O2), nitrogen (N2), carbon dioxide (CO2 ...
... Mixtures are combinations of two or more substances in which each substance retains its own chemical identity and hence its own properties. A sample of clean air, for example, consists of many elements and compounds physically mixed together, including oxygen (O2), nitrogen (N2), carbon dioxide (CO2 ...