_______________________________________ ABSTRACT The experiment aimed to determine the equilibrium constant Keq of the formation of Fe(SCN)2+ from Fe3+ and SCN- in the equation Fe3+(aq) + SCN-(aq) ⇌ Fe(SCN)2+(aq)‚ through spectrophotometric analysis. Acidified solutions (using 0.1 M HCl) of FeCl3 and KSCN were prepared for the calibration of the UV-Vis spectrophotometer (using standard solutions) and the determination of Keq of the Fe(SCN)2+ formation (solutions with unknown concentrations)
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Journal of Bangladesh Academy of Sciences‚ Vol. 35‚ No. 2‚ 203-210‚ 2011 CRYSTALLIZATION OF ZINC SULPHATE SINGLE CRYSTALS AND ITS STRUCTURAL‚ THERMAL AND OPTICAL CHARACTERIZATION J.K. SAHA AND J. PODDER* Department of Physics‚ Bangladesh University of Engineering and Technology‚ Dhaka-1000‚ Bangladesh ABSTRACT Zinc sulphate (ZnSO4.7H 2O)‚ an inorganic material has been crystallized by an isothermal evaporation method. ZnSO 4.7H2O is highly soluble in water and the solubility is found to be increased
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2012 HINDUSTAN ZINC LIMITED Mohit Parikh (2011159) [RATIO ANALYSIS AND EXPLORATORY RESEARCH ON TRAINING EFFECTIVENESS AT HINDUSTAN ZINC LIMITED DEBARI SMELTER] Completed under the able guidance of PROF. RAJ V. AMONKAR Acknowledgement At the outset I would like to thank Vedanta for providing me the opportunity to attend the summer internship program at Hindustan Zinc Limited Debari Smelter. The Summer Internship Program has been a great value addition to my profile and I hope to contribute immensely
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Copper and Zinc Composition Percentages in Pennies Introduction. The United States Mint sends copper and zinc to a fabricator‚ which creates coin-sized discs called planchets. The planchets undergo the coining press at the Mint where they are stamped as genuine United States legal tender coins. The purpose of this experiment is to determine the accuracy of the copper and zinc composition percentages in a random sampling of pennies. The penny was dissolved to make aqueous copper ions and four copper
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Darsh Patel Dr. Anthony Chem 101-L 20 March 2013 Indirect gravimetric determination of hydrate compound in a mixture Objective To determine the percent BaCL2*2H2O in sample of hydrated mixture. Materials: Aprons‚ goggles Gravimetric balance(electronic weighing scale) Crucible without cover Bunsen burner Lighter flint Iron Support stand Wire mat‚ glove Clay triangle Procedure: Step 1. Support a clean porcelain crucible and its cover on a clay triangle (see Figure 1). Heat them in
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Percent Copper and Zinc in Pennies From Density Purpose: Practicing determine the density of the solution. Developing the method for determine the percent of density for the solution. Examining the linear relationship by learning to use the best-fit straight line. Using the linear relationship to determine the percent of density by the solution. Be familiar with recording data and observations. Methods & Material: Methods: Weight the mass for the different percent of zinc and copper mixtures
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penny‚ copper‚ and zinc was needed in order to determine the percent composition of copper and zinc. The mass of penny was taken on the scale in the beginning of the procedure before anything was done to the penny‚ and it was 2.51 grams. After the reaction with the hydrochloric acid and drying the copper‚ the mass is 0.35 grams. To get the mass of zinc‚ the mass of the penny was subtracted by the mass of copper. The mass of zinc is 2.16 grams. The penny is 14% copper and 86% zinc by dividing the metal’s
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when you put zinc in copper II sulfate? • What will happen when you put copper in copper II sulfate? Predictions: • We can predict that zinc will react with the aqueous solution of copper II sulfate and we will notice a reaction. We can also predict that the copper will not react with the solution of copper II sulfate and no reaction will be noticed. Hypothesis: • It is hypothesized the zinc metal will have a precipitation reaction with the solution of copper II sulfate‚ because zinc is more reactive
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Hydrometallurgy 105 (2010) 148–154 Contents lists available at ScienceDirect Hydrometallurgy j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / h yd r o m e t Treatment of copper flash smelter flue dusts for copper and zinc extraction and arsenic stabilization A. Morales a‚ M. Cruells b‚ A. Roca b‚⁎‚ R. Bergó b a b Universidad Católica del Norte‚ Department of Metallurgical Engineering‚ Antofagasta‚ Chile Universitat de Barcelona‚ Department of Materials Science and Metallurgical
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will measure the required amount of Zinc (Zn) on a weighing scale‚ again for precise accuracy. I will then measure the starting temperature using a thermometer. Next I will pour the Zinc into the test tube containing CuSO4. 3.Finally I will measure the final temperature using a thermometer and record the temperature rise in °c. (I will carry out all my experiments under lab safety precautions.) Variables *I will vary the mass of Zinc‚ & use the following Zinc weights: 0.5g‚ 1g‚ 1.5g‚ 2g and 2.5g
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