Lab #6 Properties of Hydrates Purpose: The purpose of the “Properties of Hydrates” lab is to study hydrates‚ and be able to identify them. This lab also focuses on observing the reversibility of hydration reactions by hydrolysis‚ and also testing substances for efflorescence of deliquescence. Procedure: A. Identification 1. Place 0.5 grams of each compound (Nickel Chloride‚ Potassium Chloride‚ Sodium Tetraborate‚ Sucrose‚ Calcium Carbonate‚ and Barium Chloride) in a small dry test
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Chem 16 Notes UPD Should only be a supplement to discussions Table of Contents* [A] Lecture [1] Thermodynamics [2]Energy [3]Enthalpy [4]Hess’s Law [5]Determining Enthalpy [6]Heat Capacity [7]Calorimetry [8] Entropy [9] Gibb’s Free Energy [10] Waves [11] Quantum Theory [12] Quantum Numbers [13] Electron Configuration [14] Periodic Table [15] Periodic Trends KSev [16] Chemical Bonding [17] Formal Charge [18] Resonance Structure [19] Bonds [20] VSEPR [22] Valence Bond Theory [22] Molecular Orbital
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dissolve exothermically in water. The enthalpy change of solution‚ ΔHsoln‚ is the energy change associated with the following reaction. M represents the Group I metal. M +(aq) + OH–(aq) M OH(s) + (aq) The following diagram represents theoretical stages in the formation of aqueous MOH. M +(g) + OH-(g) + (aq) lattice energy hydration enthalpy of the ions H hydration M OH(s) + (aq) H soln M +(aq) + OH-(aq) Lattice energy and hydration enthalpy are both more exothermic when ions
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along with alkalies and minor amounts of other elements Hydration. The most important hydraulic constituents are the calcium silicates‚ C2S and C3S. Upon mixing with water‚ the calcium silicates react with water molecules to form calcium silicate hydrate (3CaO 2SiO23H2O) and calcium hydroxide (Ca [OH] 2). These compounds are given the shorthand notations C-S-H (represented by the average formula C3S2H3) and CH‚ and the Hydration reaction can be crudely represented by the following reactions:
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following will be least soluble in water? A. potassium sulfate‚ K2SO4 B. ammonium nitrate‚ NH4NO3 C. chloromethane‚ CH3Cl D. calcium chloride‚ CaCl2 E. ethanol‚ C2H6O 3. Select the precipitate that forms when the following reactants are mixed. Mg(CH3COO)2(aq) + LiOH(aq) A. LiCH3COO B. Li(CH3COO)2 C. MgOH D. Mg(OH)2 E. CH3OH 4. Select the precipitate that forms when aqueous lead(II) nitrate reacts with aqueous sodium sulfate. A. NaNO3 B. Na2NO3 C. PbSO4 D. Pb2SO4 E. PbS
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description of an experimental determination of the enthalpy of reaction of sulfuric acid in a reaction with magnesium to produce magnesium sulfate. Through the use of an ice calorimeter‚ the rxn H° D for this reaction is determined to be 1 360kJ mol − − × . Introduction: This report details an experiment in thermochemistry. Included are the methods‚ results‚ and interpretation of results of an experimental determination of an enthalpy of reaction. The reaction being studied is between sulfuric
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percent yield (i.e. CuSO4 was obtained from the reaction of CuO with sulfuric acid. If 2.5 g of CuSO4 was obtained from 5.0 g of CuO‚ what is the percent yield?) Purpose To observe the chemical properties of copper through a series of reactions To recover the original mass of solid copper by synthesizing different
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the experiment is to analyze alum‚ AlK( SO4 )2 . 12 H2 O‚ by three techniques in order to verify its identity. The following properties will be determined namely‚ melting point‚ mole ratio of hydrated water to anhydrous alum‚ and percent of sulfate ion contained in the compound. Each of these properties will be compared to the literature or established values for alum. In this experiment‚ the first step ( Part 1 ) is to find the melting point of the compound and compare it to the published
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Reporter: Kyla Franchesca V. Venegas Instructor: Prof. Susan Torres Section: 1-12 Date Performed: September 2‚ 2014 Group No.: 7 Date Submitted: October 3‚ 2014 Experiment 2 The Particulate Nature of Matter INTRODUCTION Matter is defined as that which has mass and occupies space. All matter is particulate in nature
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Joshua McMahon IB Chemistry Matt Chase 3A 11/5/14 Finding the Molar Enthalpy Change of sodium bicarbonate by using Hess Law Research Question By using Hess’ Law‚ can the Molar Enthalpy Change of sodium bicarbonate be calculated? Hypothesis If we are attempting to determine the enthalpy change of the thermal decomposition of Sodium Bicarbonate‚ then Hess’s Law will be will be the most effective. Introduction Sodium bicarbonate‚ more commonly known as baking soda‚ has many uses in todays
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