"Solubility lab" Essays and Research Papers

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    Selective Precipitation

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    Selective Precipitation of the Barium Magnesium Group ABSTRACT The purpose of this lab was to identify the cations from the barium magnesium group present in an assigned unknown solution through selective precipitation. This was a qualitative lab where the theory of the common ion effect was used in several steps. Once the experiment was completed‚ it was determined that unknown solution #4 contained Ba2+‚ Sr2+‚ and Mg2+ ions. INTRODUCTION Selective precipitation is a part of chemistry

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    for precipitation reactions. Based on the solubility rules my results proved accurate. Just by looking at the solubility rules‚ my results were what I expected them to be. I found that sodium chloride did not react with any of the five substances and that the sodium sulfate only reacted with the barium nitrate. The sodium bicarbonate‚ sodium carbonate as well as the sodium hydroxide reacted with all five substances. This was expected because the solubility rules stated that these were all insoluble

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    are the solute (substance being dissolved) and the solvent (substance that does the dissolving). The maximum amount of solute which can be dissolved in 100 g of a given amount of solvent at a specified temperature is called solubility. There are ways of increasing the solubility of solutes: pulverizing (reducing the size of solid solutes)‚ heating (increasing the temperature)‚ and agitation (stirring). The concentration of a substance in a solution is the quantity of the substance in a given quantity

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    dfdf

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    precipitate‚ if any‚ in each reaction. Balance all chemical equations. 1. Write a chemical equation for the reaction that occurs when solid sodium oxide is added to water at room temperature to yield sodium hydroxide . (Check the Solubility Rules to determine the phase of matter of sodium hydroxide.) Na2O (s) + H2O (l) → 2 NaOH (aq) 2. Translate the following chemical equation into a sentence. PbCl2 (aq) + Na2CrO4 (aq) → PbCrO4 ↓

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    Experiment 4 Formal Report

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    Faculty of Pharmacy‚ University of Santo Tomas ABSTRACT The experiment was executed in order to purify compounds through recrystallization. Recrystallization is the primary used operation for purifying solid organic compounds that differ in solubility at different temperature. It is a process of dissolving the solid to be crystallized in a hot solvent mixture and then cooling the solution slowly. The objective of the experiment is to purify crude acetanilide product. At the beginning of the experiment

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    BCS Assignment Zaki

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    based on their aqueous solubility and intestinal permeability. When combined with the dissolution of the drug product‚ the BCS takes into account three major factors that govern the rate and extent of drug absorption from IR solid oral dosage forms: dissolution‚ solubility‚ and intestinal permeability. According to the BCS‚ drug substances are classified as follows: Class 1: High Solubility – High Permeability Class 2: Low Solubility – High Permeability Class 3: High Solubility – Low Permeability

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    Expt 4 formal report

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    University of Santo Tomas ABSTRACT Recrystallization is a method for purifying solid organic compounds. The process is dissolving the solid to be purified in a hot solvent and cooling the solution slowly‚ this allows impurities with different solubility to separate from the solution in each step. The objective of the experiment was to synthesize acetanilide by the acetylation of aniline and to purify crude acetanilide product by recrystallization. The group determined water as the recrystallizing

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    purpose of this lab is to investigate the composition of a compound suspected to be Panacetin‚ a type of pain-killer. Panacetin is typically made up of sucrose‚ aspirin‚ and acetaminophen‚ but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen‚ either acetanilide or phenacetin. Using techniques such as extraction‚ evaporation‚ and filtration‚ the three components will be isolated based on their solubilities and acid-base

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    Chemical Equilibrium

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    Chemical Equilibrium: Le Chatelier Principle By Sarah Ramos and Kristina Todorovic Chemistry 203 DEN Dr. Mohamed El-Maazawi Part A. Acid-Base Indicators Purpose In this part of the experiment‚ we will find a reagent that will shift the acid-base equilibrium reaction described by Equation (2) in one direction and then a second reagent that will cause the equilibrium position to shift back in the opposite direction. Introduction An acid–base indicator

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    Experiment #17 Classification of Chemical Substances Prepared for: Dr. Robert O’Reilly By: Kudaibergenov Baizak 20.11.2013 Nazarbayev University Introduction While many thousands of substances are known‚ they can be classified into a few simple categories based on type of bonding that exists among the atoms in the substance. Bonds are chemical forces that hold atoms together to form molecules or compounds. These categories are ionic‚ molecular and metallic substances.

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