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substance was and all samples looked the same therefore we had to carry out a series of tests to figure out what structures they were made of. Some simple sugars‚ including glucose‚ can be made to reduce blue copper sulphate to red copper oxide. This reaction can be used as a test for some sugars. Copper sulphate is mixed with other chemicals to be used as Benedict’s solution which is used in the test. This was the test for reducing sugars. If the reducing sugar test comes out as negative (no colour change)
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water evaporated. * 27.30% evaporated H2O = 27.3gH2O 27.3gH2O1x1molH2O18gH2O=1.517molH2O 5) Determine the moles of ANHYDROUS copper II sulfate. (The white stuff in the dish) * 100gCuSO4gCuSO4*5H20 1002.052.82=72.7%CuSO4 (experimental) * 72.7gCuSO41x1molCuSO4160gCuSO4= 0.454 molCuSO4 6) What is your experimental ratio of copper II sulfate to water? * 0.454 CuSO4 : 1.517 H2O = 1 CuSO4 : 3 H2O .454
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Lab Report Name: _____ Date: ______ Ionic Reactions List all of the cations used: Cobalt‚ Copper‚ Iron‚ Barium‚ Nickel List all of the anions used: Phosphate‚ Iodide‚ Sulfate‚ Chloride‚ Bicarbonate‚ Carbonate‚ Hydroxide Compare your results with the solubility rules and/or solubility table in your chemistry text. QUESTIONS: A - Do your results agree with your expectations
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chlorine as spectator ions. One of the solubility rules is that sulfates are soluble except in Barium. During observation we noted a color change in liquid though not a solid
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hydroxide Ice 0.1 M lead nitrate 0.1 M barium chloride 1.0 M cadmium chloride 1.0 M ammonium chloride potassium chloride 0.1 M potassium chloride 0.1 M copper (II) sulfate 0.1 M trisodium phosphate 0.1 M sodium sulfide 0.1 M sodium nitrate
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within the range of the uncertainty. Such modifications include the usage of different solution and salt bridges after conducting each trial. However‚ one strength of the experiment is the precise calculation and measurement of Copper Sulfate‚ Sodium Chloride‚ and Magnesium Sulfate‚ as well as the creation of the 0.5‚ 1.0‚ 1.5 molar solutions. The process of measuring the exact amount of salt and then ensuring of said salt to completely dissolve in water. As well as filling the graduated cylinder with
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extraction of a metal from its ore involves a series of steps as shown… mine ore concentrate ore extract metal via smelting purify the metal Which chemical equation represents a reaction that would be appropriate for the metal extraction step for copper from its ore? (A) (B) (C) (D) FeO (s) + SiO2 (s) → FeSiO3 (l) 2CuFeS2 (s) + 5O2 (g) → 2Cu (l) + 2FeO (s) + 4SO2 (g) Cu → Cu2+ + 2e– CuO (s) + Mg (s) → MgO (s) + Cu (s) 4 Which of these processes is endothermic? (A) (B) (C) (D) decomposition
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hydroxide did nothing. It’s all clear still‚ but no chemical change. The copper nitrate and ammonuiam hydroxide turned a bluish color so that had a chemical change. (5 points) Score 2. For each metal that participated in a chemical change‚ write the type of metal it is‚ based on your examination of the periodic table. Answer: Ammouniam Vandrate had a chemical change but it turned out to be a transition metal‚ no other metal. The sulfates had more transition atoms going through the chemical‚ more than an
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platedmetals include nickel‚copper‚ and gold. While the electroplating is in progress‚ additionalsalts of the metal to be plated must continually be added to the platingsolution‚ or else the anode must be renewed‚ if it consists of the platingmetal. If the coating metal does not form a strong alloy with the metal to be plated‚ it may be necessary to first coat with an intermediate metal; for example‚ when plating silver on steel‚ it is customary to first place a coating of copper over the steel. When
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