complex of the type [MA2 B2] not show geometrical isomerism? 1 (3) How do you account for the miscibility of ethoxyethane with water. 1 (4) Give the IUPAC name of the organic compound 1 O II (CH3)2 C CH C CH3 = − − (5) Name the monomers of nylon 2 or nylon 6 ploymer. 1 (6) Give one example of an artificial sweetener used by the diabetic patients. 1 (7) Direct nitration of aniline is not carried out. Explain why? 1 (8) What type of linkage holds together the monomers of D.N.A.? 1 (9) Examine
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Wind is caused by differences in atmospheric pressure created‚ in large part‚ by the unequal heating of the earth’s surface by the sun. Air moves from a region of higher pressure to one of lower pressure and this movement is wind. Any difference in pressure will cause wind‚ but the greater the difference the stronger the wind. The direction that wind takes is influenced by the rotation of the earth. On a non-rotating earth wind would move in a straight path from a high- to a low-pressure area. It
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PAC-II COMPLEXOMETRIC TITRATION Course Contents: C OMPLEXOMETRIC TITRATION T ITRATION Complexation‚ Chelation. Werner’s co-ordination number‚ Titrants Stability of complexes‚ titration curves. Types of complexometric titrations. Methods of detecting end point‚ Standardization. Application of complexometric titrations. COMPLEXOMETRIC TITRATIONS COMPLEXOMETRIC TITRATIONS What is Complexometric Titration (CT)???? What What is a complex metal ion? A complex
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Reagent added HCl (step 3) more HCl (step 4) NaOH (step 5) more NaOH (step 6) Stress Colour change and # of drops required Direction of shift ver. 02/2012 1 Chemistry 12 Unit 2 Reaction Equilibrium TABLE 2 Equilibrium involving iron(III) thiocyanate ion Colour of FeCl3
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prepare cobalt (III) acetylacetonate in the laboratory using cobalt (II) carbonate and acetylacetone at room temperature and pressure. Introduction The anion acetylacetone (acac) used in this practical functions as a ligand which forms a complex with the cobalt metal cation in an octahedral array where there is electrostatic bonds between the cobalt metal and both the oxygen’s of the acetylacetone to form a six membered ring1. Figure1: The 3-D molecular structure of cobalt (III)
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oxidation numbers range from Mn (III) in compounds like Mn(NO)3CO to Mn (VII) in KMnO4. Compounds of manganese range in oxidation number between theses two extremes. This experiment involves the preparation of a Mn (III) complex of actylacetone (also named 2‚4-pentanedione) which is a useful starting material for the preparation of other Mn (III) compounds. Manganese (III) complexes are relatively stable and can be prepared directly by reactions of the hydrous manganese (III) oxide or by oxidation of the
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will be no overall option. Internal choices (either/or type) in five questions has been given in questions testing higher mental abilities in the following types of questions :(i) One in two marks questions. (ii) One in three marks questions. (iii) All the three in five marks questions. Guidelines for Units 10-13 of syllabus. These units include questions on: Nomenclature Reasoning Distinguishing between compounds Name reactions Reaction Mechanism Word problems (conversions) covering
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1. OBJECTIVE 1.1 To use Le Chatelier’s principle for determining the effect of change in concentration. 1.2 To use Le Chatelier’s principle for determining the effect of change in temperature. 2. INTRODUCTION Henry-Louis Le Chatelier‚ (born Oct. 8‚ 1850‚ Paris‚ France—died Sept. 17‚ 1936‚ Miribel-les-Échelles)‚ French chemist who is best known for Le Chatelier’s principle‚ which makes it possible to predict the effect a change of conditions (such as temperature‚ pressure‚ or concentration of
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I. Introduction: In this experiment‚ using Le Chatelier’s principle‚ we will observe several responses of a system at equilibrium to various changes in external conditions. The experiment aims to investigate two equilibrium systems: (a) cobalt complexes and (b) chromate-dichromate equilibrium and explain observations in light of the Le Chatelier’s principle. II. Theory/Concepts: In 1884 the French chemist and engineer Henry-Louis Le Chatelier proposed one of the central concepts of chemical
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EXTENDED ESSAY: CHEMISTRY What effect does magnetic field have on the formation of Liesegang rings (crystal growth in gel medium) on elements of ferromagnetic‚ diamagnetic and paramagnetic nature like Cobalt‚ Nickel‚ Copper and Manganese in their chloride compounds when performed in an agar medium? Lokesh Chandnani Candidate Number – 049369 – 0003 Supervisor: Mr. Jaydip Chaudhuri The Aga Khan Academy‚ Hyderabad Session: May 2015 Word Count: 3798 1. Abstract Liesegang rings phenomena is a
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