Experiment #5: Acid Burn!!! Introduction The goal of this lab was to correctly prepare a 0.2M solution of NaOH‚ identify highly acidic household cleaning chemicals‚ and determine their concentration (molarity) through titrations using the previously prepared 0.2M NaOH solution. Experimental First‚ to create 0.5L of 0.2M solution of NaOH‚ standard 3M NaOH solution was obtained. Next‚ calculations were performed to determine the amount 3M NaOH necessary to create 0.5L of the 0.2M solution and‚ as
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Method uses titration to determine dissolved oxygen in the water sample. A sample bottle is filled completely with water (no air is left to skew the results). The dissolved oxygen in the sample is then "fixed" by adding a series of reagents that form an acid compound that is then titrated with a neutralizing compound that results in a color change. The point of color change is called the "endpoint‚" which coincides with the dissolved oxygen concentration in the sample. Dissolved oxygen analysis is best
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revert back to its elemental form. Procedure: First‚ I added nitric acid with copper in a beaker‚ which turned into a copper nitrate‚ a blue-green solution. Afterwards‚ I added sodium hydroxide‚ and my solution colored to a dark blue solution called copper hydroxide. I heated the solution to evaporate the water and I got a brownish-blackish solid called copper oxide. Once the solid appeared‚ I poured in sulfuric acid to it and I got copper sulfate‚ a bluish solution. The final step I took was
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water leaching in several acid media increased the dissolution of copper and arsenic oxides and small amounts of zinc. A preliminary study by hydrocyclone classification was carried out with the objective of to obtain two fractions: a coarse fraction rich in copper and a fine fraction rich in arsenic. However‚ results obtained in this sample were not very successful. In the stabilization study‚ the residue obtained after leaching the copper flash smelter flue dust with sulfuric acid was mixed with sludge
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and is shown in Figure 1‚ below. Mechanism…EAS… Results and Discussion: Concentrated sulfuric acid was obtained and placed in a round bottom flask‚ which was placed in an ice bath. A stir bar was added to the solution and the ice bath was placed on a combo plate to induce the stirring mechanism. While stirring‚ 2-benzylpyridine and 70% nitric acid were added dropwise to the cold sulfuric acid. The solution was observed to be a yellow color. The flask was then placed on an already hot heating
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a standard curve 2. Using the prepared curve‚ determine the concentrations for control and patient specimens. Materials and Reagents: 2ml 1M Sulfuric Acid 2ml of 0.1M Potassium Dichromate Distilled Water Pipettes Volumetric Flask Test Tubes Procedure: 1. Prepare 1 ml glucose solution and place in test tubes 2. Add 2ml of 1M Sulfuric Acid solution 3. Add 2ml of 0.1M Potassium Dichromate solution 4. Start timing until the color disappear Results and Discussion: The fastest
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Experiment date:06.12.2010 Report Date: 20.12.2010 ABSTRACT In this experiment‚ the purpose was to investigate E1 elimination mechanism with the reaction of cyclohexanol to cyclohexene. The reaction was acid catalyzed dehydration of alcohol and with catalyst sulfuric acid cyclohexene was obtained from cyclohexanol. And the product was obtained from the simple distillation and later it was reacted with bromine and potassium permanganate. The observations and results were all recorded.
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the mass percent of cobalt could be determined. This step was then repeated. Coa(C2O4)b.cH2O + heat ( Co3O4 A 300 ml 0.5 M sulfuric acid solution was created by adding 25 ml of 6 M sulfuric acid to 275 ml of distilled water. A buret was then cleaned and filled with the KmnO4 solution. Next‚ 10 to 15 ml of 0.1 M sodium oxalate solution was added to 100 ml sulfuric acid and placed in an Erlenmeyer flask for titration. The solution was then heated to around 60 degrees Celsius. The solution was
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reaction‚ two π electrons from the aromatic ring serve for the ring to act as a nucleophile and attack an electrophile. For nitration‚ this nucleophile is NO2+‚ which is produced by reacting nitric and sulfuric acids. After the nucleophile adds‚ the ring has lost aromaticity. Therefore‚ the deprotonated acid in solution can pull off a hydrogen from the same carbon that the nitro group has added to‚ allowing the electrons from that bond to go back into the ring to reproduce aromaticty. There are three
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Coursework 4 Copper Name of student: Alfiya Ospanova Tutorial group: G Copper is one of the earliest elements explored by humanity. Due to the special red shade it was easy to find in ancient times. The metal was named according to place where it was found‚ the Cyprus islands. Copper produced in massive stars and spread in the world as minerals like chalcocite and chalcopyrite (sulfide of copper)‚ azurite and malachite (carbonate of copper)‚ cuprite (oxide of copper). The
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