of sodium hydroxide and hydrochloric acid‚ distilled water‚ 3 test tubes‚ test-tube rack‚ 3 x 100mL beakers‚ liquid litmus‚ universal indicator‚ methyl orange‚ Method 1.Using beakers‚ pour 2cm of acid into one test tube‚ 2cm of sodium hydroxide into another test tube‚ and 2cm of distilled water into the third test tube. 2.Add 3 drops of red litmus to each tube. Record results. 3.Repeat steps 2 and 3 for other indicators. Results Colour in strong acid (hydrochloric acid)Colour in strong
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Title : Investigation of Action of Saliva and 3M HCl in Two Carbohydrates Solutions. Objective : To investigate the action of saliva and 3M hydrochloric acid in two carbohydrate solution. Result : Table 1 : The presence of starch and reducing sugar in the solution Observation Conclusion Solution A Benedict’s test : The transparent blue solution turns into opaque brick-red precipitate Iodine’s test : The clear colourless solution turns into transparent yellowish-brown
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decrease in oxidation state. If zinc completely reacts with HCL‚ then the theoretical yield of copper should be equivalent to the actual yield. Purpose: In this lab‚ we will determine the percent composition of a modern (post-1982) penny by using a strong acid to react and dissolve the zinc core‚ leaving only the copper coating. Once only copper remains‚ we will compare its mass to the entire mass of the penny to determine how much of a penny is copper and how much is zinc. 1. Obtain one 50.0 mL beaker
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In part A‚ solutions needed in the experiment were prepared‚ and the LabQuest was set up. By adding 100mL 6M HCl to 200mL deionized water‚ 300mL of 2M HCl solution was prepared. Then 150mL 2M NaOH solution was prepared by adding 100mL 3M NaOH to 50mL deionized water. Finally‚ the LabQuest was connected to the temperature probe‚ and set up to collect data every 15 seconds‚ the duration was set to be 180 seconds. In part B‚ three reactions were performed. In reaction 1‚ two Styrofoam cups were stacked
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actual yield has to be obtained and measured in a laboratory. It may be usual to often find the actual yield to be less than the theoretical yield due to many different factors. This gives rise to the concept of percent yield. Sodium bicarbonate and hydrochloric acid was used in the experiment. The yields of sodium chloride reaction were determined and then compare it to the theoretical yield. HCl(aq) + NaHCO3(s) -> NaCl(aq) + CO2(g) + H2O(I) Materials and Methods In order to determine the percent
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Undertaken at Hindustan Zinc Limited‚ Debari CONTENTS About the Company History of the Company Sections in HZL Power requirement Organizational Chart Basic Processes Done Mining Roasting Leaching Zinc Electrolysis Melting & Ingots Formation Zinc & Its Uses Project- SWITCHYARD Zinc Smelter Debari is a Hydrometallurgical zinc smelter situated at Debari‚ about 13 kms from Udaipur‚ in Rajasthan‚ India. The primary product of Debari is High Grade (HG) zinc and it also recovers
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Analytical Chemistry Experiment 2b: Determination of the ASA Content of Aspirin Due Date: September 16‚ 2013 Experiment#: 2b Title: Determination of the ASA Content of Aspirin Aim: To determine the Molar Concentration of NaOH and HCl acid used in their Standardization processes and to determine the acetylsalicylic acid (ASA) content in Aspirin. Materials/Apparatus: materials used are the same as that outlined in the laboratory procedure prepared by the laboratory instructor. Procedure:
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TOTAL AIM: Experimentally determine the enthalpy change of the displacement reaction between zinc and copper sulphate. Zn (s) + CuSO4 (aq) Cu (s) + ZnSO4 (aq) Materials Required: 1M of CuSO4 Zinc powder Beaker Measuring Cylinder Thermometer Electronic weighing balance Spatula Thermometer Stop watch PROCEDURE: Measure 25cm3 of 1M of CuSO4 in a beaker Using a spatula take out zinc powder from its container and weigh out 2.5g of it using an electronic weighing machine. Use the
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Steel Purpose The goal of this lab is to determine the thickness of the coating of zinc on galvanized steel using the mass and volume of a sample of galvanized steel‚ and by using a larger mass; it is possible to minimize percent uncertainty. Reactions Molecular: Complete Ionic: Net Ionic: Oxidation Half Reaction: Reduction Half Reaction: Data and Calculations Density of Zinc: Density: Specifications of Galvanized Steel from Trial 1: 1.07cm x 1.51cm
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electron current between the metals Zinc and Copper. We aim two study the voltaic cells and the transfer of electrons from the metal to the ion. The tendency for the electrons to flow from one chemical to another‚ such as from the zinc metal to the copper ion as shown here‚ is something that can be channeled and controlled. Channeling the flow of electrons is what we will take up in this experiment. Research question How would changing the shape of zinc and copper affect the voltage of the
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