Zn(s) + CuSO4(aq) ------ Cu(s) + ZnSO4 (aq) The enthalpy changees for two different reactions will be determined practically. In the first‚ experiment delta H will be determined directly and account will be taken of heat losses by extrapolation of an appropriate graph. The second experiment involves teh inderect determination of an enthalpy change using Hess’ Law. The temperature can be measured manually but this experiment is ideal for using a data logger. In the first experiment we are trying
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Average Value of Salt in a Hydrate | (76%+57%)/2=66.5% | Average Value of Water in Hydrate | (24%+43%)/2=33.5% | Result of the lab was: The given hydrate is CuSO4 5H2O (Copper II Sulfate Pentahydrate) The calculated value percentage of the Salt in hydrate (66.5%) and Water in hydrate (33.5%)‚ suggests that the given initial compound is CuSO4
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2014 Purpose: To determine the identity of an unknown hydrated salt calculating the percent water loss after heating and also to determine the empirical formula of magnesium oxide. Results: Table 1: Determination of the mass of waters of hydration of an unknown hydrated compound. Hydrated Compound code: C-14 Mass (g) Crucible + Lid 30.581g Crucible + Lid + Hydrated compound 31.590g Hydrated Compound 1.004g Crucible + Lid + contents (after 1st heating) 31.122g Crucible + Lid + contents
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hydrates‚ and be able to identify them. This lab also focuses on observing the reversibility of hydration reactions by hydrolysis‚ and also testing substances for efflorescence of deliquescence. Procedure: A. Identification 1. Place 0.5 grams of each compound (Nickel Chloride‚ Potassium Chloride‚ Sodium Tetraborate‚ Sucrose‚ Calcium Carbonate‚ and Barium Chloride) in a small dry test tube. 2. Heat gently with a burner flame and observe carefully. If droplets of water appear on the test
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Basic Requirements 1. Your project must be multimedia‚ containing both text and visual components and perhaps audio (visual means everything from photos to drawings to paintings to textiles to a slide show presentation to video; the possibilities are endless!). 2. Your project must describe important moments of your history. 3. Your project must be both symbolic and literal; you must include both direct descriptions about yourself‚ like those Esperanza shared‚ and include artwork that shows
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………………………………………………………………………….17 Chemical Nomenclature: The Language of Chemistry Experiment 5 ………………………………………………………………………….22 Water of Hydration Experiment 6 ………………………………………………………………………….25 Gases Experiment 7 ………………………………………………………………………….27 Oxygen Experiment 8 ………………………………………………………………………….29 Heat and Volume Effects Experiment 9 ………………………………………………………………………….31 Flame Test Experiment 10 ………………………………………………………………………..32
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burner and heat until the bluestone turns from blue to white all the way through. 5) Using tongs‚ take the crucible out of clay triangle until it cools. 6) Carefully pour CuSO4 from crucible to massing tin. 7) Record the mass of massing tin with CuSO4 inside. 8) Clean up lab station. Data: Table one displays our data for percent of water in bluestone. | |Massing Tin |Massing tin with |Crucible with CuSO4 |Bluestone without crucible| CuSO4
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dish 4. Heat the hydrated copper (II) sulphate on a hot plate from medium to lower-medium heat (to around 110 degree Celsius at last) 5. Remove the crucible dish using oven mitts and tongs until
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(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 thermometer to measure the initial temperature of the CuSO4 for 3 minutes. Slowly add the zinc powder to the CuSO4 solution
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Copper Sulphate solution (CuSO4) in a measuring cylinder‚ for precise accuracy‚ and then pour the solution into test tube. I will place the test tube into a beaker and insulate the test tube‚ for minimum heat loss. (As shown in the diagram above.) 2.Secondly I 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
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