1. Write out and balance each of the following equations. A. CuSO4 + Fe Cu + FeSO4 B. 3CuSO4 + 2Fe 3Cu + Fe(SO4)3 2. If Iron (III) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent? C. 2.26 g Cu D. Fe 3. If Iron (II) Sulfate were formed‚ what mass of Copper would be expected and what is the limiting reagent? E. 2.8 g Cu F. CuSO4 Driving Question: What compound is formed when you add 7 g of CuSO4
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Comparing the enthalpy changes of combustion of different alcohols Aim In this experiment I will investigate the enthalpy changes of combustion. In particular I will be investigating the enthalpy change of combustion for different alcohols. I hope to investigate some of the homologous series alcohols‚ as well as a few structural isomers of these alcohols. Background & theory Enthalpy cannot be measured. What we can actually measure is the enthalpy change from the reactants to the products.
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Reaction co-ordinate ?H is the heat content‚ which is the enthalpy‚ which is negative in exothermic reactions as the diagram shows that energy is ’lost’ as heat. Enthalpy is defined as the energy of reaction‚ or the heat energy associated with a chemical change. Chemical Principles By Master & Slowinski says that "For any reaction carried out directly at a constant pressure‚ the heat flow is exactly equal to the difference between enthalpy of products and that of the reactants"‚ or: Qp = Hp - Hr =
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Chemical Reactions Purpose: To observe and differentiate between the four different types of chemical reactions. Variables: The independent variables are the sodium chloride‚ sodium carbonate‚ magnesium‚copper‚ copper (11) sulfate‚ silver nitrate‚ oxygen‚ lead(11) nitrate‚ sodium carbonate‚ copper (11) sulfate pentahydrate. The dependent variables are the chemical reactions that are being looked for. For example decomposition‚ synthesis‚ single displacement or double displacement of compounds or elements
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the chemical formulas of the reactants for each reaction: • zinc – Zn copper sulfate – CuSO4 In well 1A there was a chemical reaction which turned the zinc black‚ while the copper sulfate was still blue. AX + B → A + BX Zn + CuSO4 → ZnSO4 +Cu • aluminum – Al copper sulfate – CuSO4 In well 2A there was no reaction between the aluminum and copper sulfate. The aluminum floated and there was no change in color‚ gas released‚ or precipitates
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# Now You See It – Copper Cycle Lab The purpose of the lab is to discover what happens when someone executes a series of procedures‚ beginning with copper metal. What is done | What is observed | 1. Started with copper‚ Cu (s). | reddish‚ brownish‚ orange-ish‚ powder-like | 2. Added nitric acid‚ HNO3 (aq). | acid turns blue and smells like chlorine. | 3. Added water‚ H2O (l). | stayed the same | 4. Added sodium hydroxide‚ NaOH (aq). | changed consistency‚ gel-like | 5. Heated the
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Analysis of Alum AlK(SO4)2*12H2O: Determining the Melting Point and Water Hydration PreLab Questions: 1. When measuring the melting point‚ it is best to heat up the sample slowly so that the alum sample would be the same temperature as the water. The sample also needs time to melt. 2. 0.787g Na2CO3 1.336g H2O Moles of Na2CO3 = 0.787/106 = 0.00742moles Moles of H2O = 1.336/18 = 0.0742 Molar Ratio = 10 moles of H2O‚ 1 moles of Na2CO3 Abstract: The purpose
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several methods‚ which include the oxidation of cyclohexane‚ the hydration of cyclohexene‚ or the hydrogenation of phenol (Zhang‚ et al‚ 2002). Problem with oxidation of cyclohexene is poor selectivity‚ extremely large recycles and explosion hazards. (Suresh‚ Sridhar‚ Potter‚ 1988). The purpose of this experiment was to synthesis cyclohexanol by hydration of cyclohexene using concentrated sulphuric acid as an acidic catalyst. In hydration reaction‚ C=C B bond is replaced by hydroxyl group (Hornback‚
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Drying the organic solvent. The organic solvent containing the neutral compound contains some dissolved water. If the solvent were evaporated at this point‚ the resulting solid neutral compound would be wet with water and would consequently be a gooey mess and would take a long time to dry. A drying procedure is therefore necessary to remove all traces of water before the solvent is evaporated. This procedure consists of two steps: (1) thoroughly mixing the solution with saturated aqueous sodium
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Title: Zinc and Copper II Sulfate Lab Purpose: To determine which mole ratio of Zinc and Copper II Sulfate produces the greatest temperature change in degrees celsius. Background: This experiment will be looking for color change‚ temperature change‚ and precipitation change. Some background knowledge I know is how to balance equations. I also know side effect of a chemical change‚ in this experiment there was a color and temperature change. Other background knowledge is using and applying the
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