soluable‚ if they produce a milky substance‚ they are insoulubale. All of my phosphates formed a insoluble precipitate which is correct accourding to the solubility rules. All of my iodine reactions should have been soluble‚ my exception was Sodium Iodide and Copper(II) Nitrate. My barium Nitrate combined with Sodium sulfate was insoluble with is correct accourding to the solubility rules. All reactions with Chloride should have been soluble and they were. All Bicarbonate were in soluble‚ these I
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Laboratory Report Title: Observation of Chemical Change Course: General College Chemistry Purpose This experiment examines the reactions of common chemical s contained in consumer products. The purpose is to observe the macroscopic changes that these chemicals undergo. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Procedure We do not have the ability to see with a naked eye individual atoms and molecules
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Tittle : Rancidity Measurement in Fats and Oils. Introduction : Vegetable oil is an important and widely used lipid source for our everyday food products. Its application is increasing day by day for food purposes and for the manufacturing of a number of toiletry products. However‚ some vegetable oils are not up to standards to meet consumer satisfaction in terms of their physico-chemical properties or for the texture and stability of the food products (Reyes- Hernandez et al.‚ 2007). Recently
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After a short time‚ the bubbles disappeared and the liquid turned to be very clear and translucent. In the second reaction between Potassium Iodide and Silver Nitrate there were no bubbles‚ however the substance turned a yellow-white colour after a few minutes. After a longer wait‚ the substance started to precipitate and the liquid started to become more solid. In the third reaction of which
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standards given). The time it takes to form the precipitate indicates if it is a primary or secondary compound. A secondary compound’s formation of precipitate is be faster than that of a primary compound. Another test involves sodium iodide. This time‚ sodium iodide is added to three test tubes‚ already with the products‚ and if a precipitate forms at room temperature‚ it is a primary compound. If the mixture precipitates at 50˚ C (after heating)‚ then it is a secondary compound. The results of both
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ALCOHOLS Alcohols are compounds in which one or more hydrogen atoms in an alkane have been replaced by an -OH group. For the purposes of UK A level‚ we will only look at compounds containing one -OH group. For example: Primary alcohols In a primary (1°) alcohol‚ the carbon which carries the -OH group is only attached to one alkyl group Some examples of primary alcohols include: Secondary alcohols In a secondary (2°) alcohol‚ the carbon with the -OH group attached is joined directly to
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NAME; BOAKYE SAMUEL ANSAH COURSE; BSC.CHEMISTRY YEAR; ONE INDEX NUMBER; 1026613
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Chapter 13‚ “Chemical Reactions”‚ was also of great interest to me. “A change that alters the chemical composition of a substance and hence forms one or more new substances is called a chemical change‚ or more often‚ a chemical reaction (James T. Shipman 342).” In this summary paper‚ I will discuss some of the highlights of the chapter. An awesome example of a chemical reaction is that of photosynthesis‚ found in green plants. In photosynthesis‚ plants absorb carbon dioxide gas from the air
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a reducing agent. The reaction forms dehydroascorbic acid and iodide. Ascorbic acid + I2 -> dehydroascorbic acid + 2 H+ + 2 I- However‚ Iodine does not dissolve in water very well. In this case‚ standard solution of potassium iodate(V) is used to produce aqueous iodine. Excess potassium iodide and dilute sulphuric acid is added to react with potassium iodate. KIO3 + 5 KI + 3 H2SO4 -> 3 I2 + 3 H2O + 3 K2SO4 Excess potassium iodide also helps dissolving iodine produced. I-(aq) + I2(s) I3-(aq)
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pipets (2) | |conductivity tester |CaCl2 (calcium chloride) | |ethanol |KI (potassium iodide) | |iron ring |NaCl (sodium chloride) | |ring stand |C13H18O2 (ibuprofen)
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