De La Salle University- Dasmariñas Dasmariñas Cavite Philippines ABSTRACT The Copper Reactions experiment was demonstrate by adding the reagents like 16M HNO3‚ Distilled water‚ 6M NaOH‚ 6M H2SO4‚ Acetone‚ Zinc metal and Methanol into the beaker with the copper wire. The experiment was also demonstrated to observe how copper reacts while different reagent were being added. It was also demonstrated to practice the common laboratory techniques such as method of separation involving filtration‚ sedimentation
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February 27‚ 2013 Abstract The analyte used is the soda ash which is titrated with an HCl titrant‚ standardized by Na2CO3. The indicators used are phenolphthalein for basicity and methyl orange for acidity. The two volumes of the titrant are then used to calculate percent composition of soda ash analyte. At the end of the experiment‚ the calculated average percent by mass of Na2CO3 is 4.92% and the average percent by mass of NaHCO3 is 5.07%. Introduction Soda ash is the common name for sodium carbonate
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The first flask was placed under a buret. Finally we titrated the KHP by adding the base until the end point was reached‚ which was when it turned pink completely. We repeated this twice and then cleaned up. The procedure does not include very difficult math‚ however the calculations did. The harder math calculations included finding moles of the acid‚ moles of the base that was used to neutralize‚ and the molarity of the base. After all calculations‚ below is what we concluded. The molarity you
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determine the reaction stoichiometry and the valency of magnesium Introduction Stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction. Stoichiometry can be used to calculate the amount of a product formed when given the reactants and a percentage yield. In the case of this experiment‚ a known starting mass of magnesium ribbon and the amount of collected hydrogen gas will be used in order to determine the reaction stoichiometry Magnesium is used
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elements. This arrangement of elements in the order of increasing atomic number with the elements having similar properties placed in vertical columns is known as periodic table. MATERIALS/REAGENTS AND EXPERIMENTAL PROCEDURE For the Group IA & IIA Elements‚ each small amount samples ofLi2CO3‚ Na2CO3‚ K2CO3‚ MgCO3‚ CaCO3 and BaCO3 was place in the different test tubes. After placing them in the test tubes‚ we identified the physical state‚ color‚ and appearance of each. Then we test the
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The Synthesis of Alkenes: The Dehydration of Cyclohexanol Adam Ohnmacht CHEM 0330 Scott Caplan 10/30/12 Abstract: In Organic Chemistry‚ many different methods are used to synthesize organic compounds from various components. In this lab‚ cyclohexanol was dehydrated to cyclohexene through an elimination reaction. In order to separate the cyclohexene product from the cyclohexanol starting component‚ previously learned lab techniques such as extractions and simple distillation were used.
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Samples | Physical State | Color | Appearance | Solubility in Water | | | | | | Group IA and Group IIA Elements | | | | Li2CO3 | Solid | White | Shiny Powder | Soluble | Na2CO3 | Solid | White | Refined Powder | Soluble | K2Co3 | Solid | White | Powder | Soluble | MgCO3 | Solid | White | Unrefined Powder | Insoluble | CaCO3 | Solid | White | Powder | Insoluble | BaCO3 | Solid | White | Crystalized Powder | Insoluble | | | | | | Some Group IVA Elements | | |
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as increased/decreased pH and presence of other substances‚ were observed. A pancreatin solution was first prepared from a hog pancreas and was completely neutralized using 0.5% Na2CO3. Afterwards‚ 3 mL each of the neutral pancreatin solution was placed in 7 test tubes and were further added with other specified reagents. The test tubes containing HCl were not effective in digesting the biomolecules since pancreatin is only active in moderately alkaline conditions‚ as observed in test tube 2. Data
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constituent into another compound containing that constituent and measuring the percentage of sulphate in the new compound to determine the percentage of sulphate in the previous compound. This experiment also demonstrates the concept of stoichiometry. Stoichiometry is the determination of the proportions in which chemical elements combine and the mass relations in any chemical reaction. Also known as mass analysis‚ gravimetric analysis is used to determine an analyte by selective precipitation
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Aneesa Noorani Lab Day: Tuesday Lab Room: SCL 114 Date of Experiment: January 22‚ 2013 TA: Mikhail 1. Basic Laboratory Skills Purpose(s) of the Experiment: The purpose of the first part of today’s experiment is to establish the stoichiometry of the reaction between titrate oxalate (C2O42-) and permanganate (MnO4-). The purpose of the second part of today’s experiment is to learn about the concepts of the rate of chemical reactions and homogenous catalysis. Broad Overview of the
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