Acid Determination of Vitamin C Tablets and Salt Solutions Chem 1290-016 03-05-2010 ------------------------------------------------- Purpose: The purpose of this lab was to use acid-base titrations to find the mass percent of ascorbic acid in a Vitamin C tablet. A known concentration of sodium hydroxide was used and the value found was compared to the stated amount of ascorbic acid listed on the vitamin container. Also in this lab the acidity of different salt solutions were tested using
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Determination of g by Free Fall Raw Data: Time (ms) ± 0.01ms Height of release of ball from the sensor plate (cm) ±0.1cm Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 0.0 0.00 0.00 0.00 0.00 0.00 15.0 180.05 179.36 178.74 180.26 180.23 30.0 244.33 244.21 244.71 243.88 245.87 45.0 300.72 301.29 300.59 301.43 301.70 60.0 348.68 348.39 348.77 349.12 348.35 75.0 390.27 390.77 389.58 391.19 390.43 This table below is the results obtained during the experiment in cm/ms. This table below is the results
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Materials 5 meters of varnish insulated copper wire with diameter 0.5mm PVC pipe- 300mm length 3- 1.5 volt batteries with casing 3- jumper wires with crocodile clips Multimeter Scissors Infrared Thermometer 1 roll of insulation tape Procedure 1. Wind the wire around the PVC pipe. Fix the ends of the wires to the insulation tape. Remove about 3 cm. of insulation from the wire using the tips of the paper knife. Measure the resistance of the wire using the ohm
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Determination of the Equilibrium Constant for Ferric Thiocyanate In this laboratory exercise‚ the equilibrium constant(Kc) for the reaction between the Ferric Ion (Fe3+) and the Thiocyanate Ion (SCN-) was determined. After measuring the absorbance of the Ferric Thiocyanate‚ and carrying out some calculations; it was determined that Kc=130.81M Introduction: Chemical equilibrium is established when a reaction exists in a state where the forward reaction rate is equal to its reverse reaction
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The determination in Animal farm and the journey they faced was compacted. Animal Farm by Gorge Orwell was a yet aggravating book. It caused many disconcerted emotions. This book is a very good example of the history of the Soviet Union. This book gives a very good understanding to young adults who read it. I realized the events that took place during that time were atrocious and so much people were suffering and in pain while the power that went to Stalin’s head was effecting so much people and
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lab is to determine the identity of an unknown liquid by measuring its density and its boiling point and try to match it with those solutions given in Table 2 of experiment 2. Procedure Part A In Part A‚ The main purpose was to find the determination of the density of the unknown (j41) and by doing that we had to determine volumes of the unknown liquid (j41) using three different volumetric devices which are graduated cylinder‚ pipette and burette. Then we had to perform three measurement
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methods to deductively identify compounds (1) . The determination of unknown #6 (2-butanol) was identified by a series of test; first taking the boiling point (94-96 C)‚ performing a solubility test‚ Beilstien test‚ Ignition test‚ and the appropriate functional group tests. An infrared spectrum and an NMR spectrum were then obtained and confirmation of the compound was proved. 2-butanol (sec-butyl alcohol) Introduction: The determination of unknowns is an important skill to organic chemist
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Solubility Product Determination Purpose • To determine the solubility product constant‚ Ksp‚ of an ionic compound. Introduction The solubility product constant‚ Ksp‚ is a particular type of equilibrium constant. The equilibrium is formed when an ionic solid dissolves in water to form a saturated solution. The equilibrium exists between the aqueous ions and the undissolved solid. A saturated solution contains the maximum concentration of ions of the substance that can dissolve at
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university of ibADAN DEPARTMENT OF PETROLEUM ENGINEERING DETERMINATION OF REFRACTIVE INDEX OF CRUDE OIL TPE 527 PETROLEUM ENGINEERING LAB. 111 NUESIRI ESEOGHENE ANITA 151419 11/21/2014 LABORATORY REPORT SUBMITTED TO DR.S.O ISEHUNWA Department of Petroleum Engineering‚ Faculty of Technology‚ University of Ibadan‚ Ibadan. 20th November‚ 2014 The head of department
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Complexometric Determination of Water Hardness Kayla Partridge Britni Gonzales 09/15/2014 Abstract Determining the water hardness of unknown sample #55 was determined by complexometric titration. With the use of disodium salt EDTA as the solution to chelate the metal impurities and the Eriochrome Black T indicator as the solution used to help visualize when the impurities were completely chelated‚ along with a few other solutions to help the reaction. Unknown water sample #55 experimental
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