A. Title – Acid-Base Extraction with Separatory Funnel B. Introduction – The main objective of the experiment was the extract an acid‚ a base‚ and a neutral compound from a 2:1:1 compound of benzoic acid‚ p-nitroaniline‚ and azobenzene. In theory‚ an extraction technique based on phase distribution should allow two immiscible solvents to separate with a portion of the solute distributed into each. Using a separatory funnel‚ acids were extracted with bases (NaOH)‚ and bases were extracted
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CHEM 120 (Fall 2011) 1. Test #1 (Version 001) Page 2 of 8 (0.5 marks) Elemental mercury‚ Hg(l)‚ has a density of 13.6 g mL−1 at 25°C. What is the volume of 4.25 grams of Hg(l)? A. B. C. D. E. 0.313 mL 3.20 mL 17.8 mL 57.8 mL none of the above 2. (0.5 marks) What is the mass of 0.45 mol S? Choose the closest value. A. B. C. D. E. 9.7 g 0.45 g 14 g 0.049 g 15 g 3. (0.5 marks) Balance the following equation using the smallest whole number coefficients. C5H10O5 + O2 → H2O + CO2 What
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Practice Set- Balancing Reactions Section I - Place the appropriate coefficient on the line in front of each species to balance each equation and then under each equation identify the reaction type. 1. ____ Cu +_______Cl2 ® _________ CuCl 2. _____ H2O ® ______ H2 + _______ O2 3.______ KBr + _______ AgNO3 ® ______ KNO3 + _______ AgBr 4. ______ CH4 + _______O2 ® ________ CO2 + ________ H2O 5._______ Zn + _______ HCl ® ________ H2 + _______ ZnCl2 6. _____Fe + ______ H2O ® _______ Fe3O4 + _______
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Set 1 1. To separate sand and camphor in pure state from the given mixture of sand and camphor. 2. To separate sand and salt in pure and dry state from the given mixture of sand and salt. 3. To prepare common salt by treating acid with base. 4. To prepare crystal of copper sulphate from the given mixture of sand and copper sulphate. 5. To prepare barium sulphate by treating barium chloride with dilute sulphuric acid in pure state. 6. To separate sand and calcium carbonate
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Redox Problem Set 1: Reactions and Stoichiometry (All of these questions are no calculator friendly) 1) Give the oxidation number of carbon in each of the following: a) b) c) d) CF2Cl2 Na2C2O4 HCO3-1 C2H6 2) Give the oxidation number of sulphur in each of the following: a) b) c) d) SOCl2 H2S2 H2SO3 Na2S 3) Identify the oxidizing and reducing agents in each of the following: a) b) c) d) 8H+(aq) + 6Cl-1(aq) + Sn(s) + 4NO3-1(aq) SnCl6 -2(aq) + 4NO2(g) + 4H2O(l) 2MnO4-1(aq) + 10Cl-1(aq) + 16H+(aq)
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Investigating Vitamin C Background Vitamin C is found in green vegetables‚ fruits‚ and potatoes. It is essential for a healthy diet. The chemical name for vitamin C is ascorbic acid. Ascorbic acid is a good reducing agent and therefore it is easily oxidised. Methods for the detection of vitamin C involve titrating it against a solution of an oxidising agent. Where to start There are several oxidising agents that can be used and a commonly used one is 2‚6-dichlorophenol-indophenol or DCPIP
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Scientific Method American InterContinental University Online SCIE206-1301B-12 Instructor Mamie Ware March 31‚ 2013 Scientific Method Observation: During the winter‚ you spread salt daily on your driveway to melt the snow. In the springtime‚ when the lawn begins to grow‚ you noticed that there is no grass growing for about 3 inches from the driveway. Furthermore‚ the grass seems to be growing more slowly up to 1 foot from the driveway. Question: Might grass growth be inhibited by salt
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AP Chemistry Name _________________________________ Period ___ Date __/__/__ 4 Reactions in Aqueous Solution Precipitate Practice #1 Write balanced molecular and detailed ionic equations. Strike out any spectator ions. 1. Solutions of lead nitrate and potassium chloride are mixed. Pb(NO3)2(aq) + 2 KCl(aq) PbCl2(s) + 2 KNO3(aq) Pb2+ + 2 NO3- + 2 K+ + 2 Cl- PbCl2(s) + 2 K+ + 2 NO3- 2. Solutions of sodium sulfate and calcium bromide are mixed. Na2SO4(aq)
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Qualitative Analysis-Part 2 Anions September 18th‚ 2013 Submitted to: Ron Submitted by: Chris Lab Partner: Neil Objective: Using qualitative analysis we will run a series of experiments to test for negative anions in different solutions. Rational: These experiments will allow detection of anions in a given solution. Method: CO3 Solution Iodine Solution 6M Nitric Acid SO4 Solution Sulphric Acid(H2SO4) Chloride Solution 6M Asetic Acid(CH3COOH) Barrium
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Aqueous Solutions Reactions‚ Metathesis (Double Replacement) Reactions and Net Ionic Equations Terrance Shelton Introduction India’s cultural treasure and biggest tourist attraction is slowly losing its magnificent appeal due to decades of acid rain. The walls of the Taj Muhal are composed of a marble-like substance ( CaCO3) that corrodes and eventually crumbles when reacted with acid rain(H2SO4). Not only is the Taj Muhal suffering‚ but also other historic landmarks across the world. This is
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