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    Alum Ap Chemistry Lab

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    AP Chemistry Lab 2: Analysis of Alum Lab Objective: In this lab we will analyze alum by two techniques in order to verify its identity. The melting point and the mole ratio of hydrated water to anhydrous aluminum potassium sulfate will be determined. Lab Procedure: 1. Use a mortar and pestle to crush alum. 2. Pack the alum in capillary tube‚ and then fasten it to the thermometer. 3. Fasten the thermometer to the ring stand. 4. Immerse the bottom of the

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    AP Chemistry Analysis of Alum * Purpose: * In this lab we performed several tests to determine if our crystals were actually aluminum potassium sulfate. * Procedures: * Materials: * Chemicals: * Aluminum potassium sulfate‚ 2.5 g * Equipment – Part 1: * 150 mL beaker * Bunsen burner * 2 capillary tubes * Mortar and pestle * Notched stopper to hold thermometer *

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    analysis of alum lab

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    Analysis of Alum‚ AlK(SO4)2・12 H2O Partner: Cindy Date: Sep 15‚ 2011 Purpose: The purpose of this experiment is to verify the identity of the alum by finding the properties of the substance; melting point and mole ratio of the water to the anhydrous. Every substance has unique characteristics which help to determine the identity of it. The actual values of the properties can be compared to the experimental values. In real life‚ this can be used to determine the unknown medicines. Hypothesis:

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    Ap chem lab

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    Emission Spectroscopy Lab Introduction: According to the Bohr atomic model‚ electrons orbit the nucleus in fixed paths with specific energies. Each path is therefore often referred to as an “energy level”. Electrons possessing the lowest energy are found in the levels closest to the nucleus. Electrons of higher energy are located in progressively more distant energy levels. If an electron absorbs sufficient energy to bridge the “gap” between energy levels‚ the electron may jump to a higher

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    Ap Chem Lab Report

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    Analysis of Alum The objective of this lab is to run tests on a compound and analyze the substance itself‚ and then determine whether or not the compound is actually alum. Jill Cline Period 3 November 19‚ 2013 Laurel Hergenroeder and Sarinah Martelli Introduction/Purpose The purpose of this experiment is to run various tests on the substance called alum. (AlK(SO4)2 ∙ 12H2O). These tests like the process of filtration heating the solution will reveal things

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    Analysis of Alum

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    Analysis of Alum AlK(SO4 )2 . 12H2O AP Chemistry Lab # 5 INTRODUCTION Every compound has a unique set of chemical and physical properties. To identify a compound with certainty‚ experiments have to be conducted in order to verify these properties. Such kind of analysis is usually performed when a compound is synthesized‚ and whether the compound is indeed the compound desired needs to be ascertained. The main purpose of the experiment is to analyze alum‚ AlK( SO4

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    Syllabus AP chem

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     Chemistry: The Central Science by Brown‚ LeMay and Bursten‚ 10th ed.‚ Pearson        Education. Inc.‚ Upper Saddle River‚ NJ‚ 2006‚     ISBN: 0­13­146489­2         Includes: Text book‚ Laboratory Manual‚ Student Study Guide‚ AP Test Prep Series‚                        Solutions to Practice Problems    2. Barrons AP Chemistry‚ Jespersen‚ Neil D‚ 4th ed.‚ Barron’s Educational Series‚ Inc‚ 250       Wireless Boulevard‚ Hauppauge‚ New York 11788‚  ISBN: 978­0­7641­9329­3        Topics and Concepts Covered  Topics covered are suggested by the College Board

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    The Analysis of Alum

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    Computer The. Analysis of Alum 158 After a compound has been synthesized‚ tests should be carried out to verify that the compound fonned is indeed the compound desired. There are a number of tests that can be perfonned to verify that the compound is the one desired. In Experiment 15A‚ you prepared alum crystals‚ KAl(S04)z·12H 20. In Experiment 15B‚ you will conduct a series of tests to detennine if your crystals are really alum. The first test is to find the melting temperature of the

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    Alum Lab Conclusion

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    Alum Lab Conclusion The purpose of this laboratory was to use two different techniques to attempt to identify the melting point and the mole ratio of hydrated water to anhydrous aluminum‚ potassium‚ and sulfate of AlKSO4. The hypotheses were: if the alum was put in a capillary tube the melting point of alum will be able to be determined; and the water of hydration in alum crystals will be possible to determine if the alum is heated with a Bunsen burner. Results: Part 1: Data Table | Trial

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    Ap Chem

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    change in freezing point of a solvent when the unknown substance is dissolved in it. Qualitative Data: Trials BHT (g) Cetyl –Alcohol (g) Unknown substance (g) Melting Temperature 1 0.48 g 0 0 69.3 2 0.46 g 0.09 g 0 66.9 3 0.49 g 0 0.11 g 53.7 Analysis: 1.) Determine ___ for the solution of cetyl alcohol and of the unknown substance in BHT. 2.) Calculate the molality of the cetyl alcohol solution and use it to calculate the value of the freezing point depression constant‚____‚ for BHT. 3.)

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