cobalt chloride concentration

VISIBLE SPECTROSCOPY - faculty.sites.uci.edu

A cobalt (II) chloride solution of unknown concentration is found to have an absorbance of 0.28. The unknown concentration can be calculated by setting y = 0.28 and solving for x. Also, by a visual comparison to the plot (Figure 7), the concentration of the unknown is 0.057 mol/L. Figure 7: A Beer's Law Plot for a CoCl 2(aq) at 560 nm.

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Blood doping by cobalt. Should we measure cobalt in athletes?

Jul 24, 2006· Cobalt belongs to Group VIII of the periodic classification of elements and shares properties with nickel and iron. Cobalt is a naturally-occurring element with properties similar to those of iron and nickel. It has been reported that cobalt chloride promotes an hypoxia-like response, involving enhanced erythropoiesis and angiogenesis.

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THE COBALT CHLORIDE EQUILIBRIUM. - Lapeer

THE COBALT CHLORIDE EQUILIBRIUM. BACKGROUND INFORMATION The element cobalt can form compounds in two different oxidation states, +2 and +3. The +2 state is more common. The ion Co 2+ (aq) is pink. Other compounds of cobalt(II), which include both anhydrous Co 2+ and complex ions, are commonly blue.

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Cobalt(III) chloride - Wikipedia

Cobalt(III) chloride or cobaltic chloride is an unstable and elusive compound of cobalt and chlorine with formula CoCl 3. In this compound, the cobalt atoms have a formal charge of +3. The compound has been reported to exist in the gas phase at high temperatures, in equilibrium with cobalt(II) chloride …

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Chemical Equilibrium. Cobalt(II) Chloride Solution ...

Nov 03, 2011· The equation representing the equilibrium system: Co(H2O)6(aq)+4Cl <---> CoCl4(aq)+6H2O concentrated hydrochloric acid (12mol?L) was added to the test tube with cobalt chloride solution. in which direction did the position of equilibrium shift? water was added to this equilibrium system. state whether the amount of each of the following substances increased, …

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Safety Data Sheet (SDS) - flinnsci.com

This Safety Data Sheet (SDS) is for guidance and is based upon information and tests believed to be reliable. Flinn Scientific, Inc. makes no guarantee of the accuracy or completeness of the data and shall not be liable for any damages relating thereto.

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Cobalt Chloride: Colorful Moisture Detector

Cobalt chloride, CoCl 2, is a fascinating compound that changes color in response to humidity. As humidity increases, cobalt chloride changes color from sky blue to purple to pink. Such striking changes in color make cobalt chloride useful as a humidity indicator in …

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#8 Beer's Law, Cobalt Chloride - phillysim.org

#8 Beer's Law, Cobalt Chloride _____ Purpose: Using Beer's Law you will find the concentration of cobalt chloride from the amount of light absorbed by its solution. Introduction: A spectrum is a recording of the wavelengths absorbed by a sample. Colored compounds, such as the pink cobalt chloride used in this experiment absorb in the visible.

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Spectrophotometric Analysis of a Cobalt (II) Chloride ...

The concentration of the Cobalt (II) Chloride was concluded to be 0.04925M at 500nm on a graph that used the Beer's Law Plot with a slope defined as K = 4.6619. INTRODUCTION: In order to determine the absorption of light with a series of pre-diluted Cobalt (II) Chloride solution and an unknown concentration of a Cobalt (II) Chloride solution ...

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Precipitation Titration of Cobalt Chloride - BrainMass

2. Add 10 mL of cobalt chloride solution (CoCl2) to the flask. Dilute the solution by adding 10 mL of water. This makes it easier to visualize the endpoint, but remember that the concentration of the CoCl2 solution relates the moles of CoCl2 to the original 10 mL. 3. Add 1 drop of thymolphthalein to the flask. 4.

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Determination of Cobalt by Titration with EDTA

Determination of Cobalt by Titration with EDTA I. Introduction The quantitative determination of many metal ions in solution can be achieved by titrating with a standard solution of a Lewis base (ligand). A necessary requirement is that the ligand combines (complexes) quantitatively with a particular metal ion under the solution conditions.

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Hexaamminecobalt(III) chloride | Cl3CoH18N6 - PubChem

Luteo-cobaltic Chloride. AC1Q1RLX. 3Cl.Co.6NH3. Cobalt hexammine trichloride. AC1L4LL9. Hexaaminecobalt(III) chloride. Hexaammine cobalt(III) chloride. JXBGZYGSWFSYFI-UHFFFAOYSA-K. 5308AF. AKOS015916226. Hexamminecobalt(III) chloride solution. HEXAAMMINECOBALT (III) CHLORIDE, Hexamminecobalt trichloride 0.1 M solution. FT-0626942 ...

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Cobalt chloride (UK PID) - inchem.org

Features Dermal - Cobalt chloride is a topical irritant and a recognized cause of occupational contact dermatitis. - Simultaneous allergies to nickel and cobalt are frequent. Ocular - Cobalt chloride is a potential eye irritant but there are no reports of acute eye toxicity in man.

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Equilibria 15.1-Lecture Demonstrations-Department of ...

Demonstrations › Equilibria › 15.1. Equilibria. 15.1 Cobalt Chloride Equilibrium. Subjects: Equilibrium, kinetics Description: Test tubes containing a pink solution of cobalt and chloride ions are placed in hot water and cold water. The tube placed in hot water will turn …

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Cobalt(II) chloride - Wikipedia

Cobalt(II) chloride is an inorganic compound of cobalt and chlorine, with the formula CoCl 2.It is a sky blue crystalline solid.. The compound forms several hydrates CoCl 2 •n H 2 O, for n = 1, 2, 6, and 9. Claims of the formation of tri- and tetrahydrates have not been confirmed. The dihydrate is purple and hexahydrate is pink.

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Preparing and using cobalt chloride indicator papers ...

Making cobalt chloride papers. Procedure. a Dissolve 5 g of hydrated cobalt(II) chloride in 100 cm 3 of water (solution is TOXIC).. b Soak filter paper in this solution, drain and dry in an oven (set at no more that 100°C), so that it is a definite blue colour.. c The filter paper can be cut into small strips and stored in a desiccator with dry silica gel.

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Cobalt Compounds - US EPA

Cobalt Compounds Hazard Summary Cobalt is a natural element found throughout the environment. Acute (short-term) exposure to high levels of cobalt by inhalation in humans and animals results in respiratory effects, such as a significant decrease

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COBALT AND INORGANIC COBALT COMPOUNDS - who.int

Cobalt and inorganic cobalt compounds 1 FOREWORD Concise International Chemical Assessment Documents (CICADs) are published by the International Programme on Chemical Safety (IPCS) — a cooperative programme of the World Health Organization (WHO), the International Labour Organization (ILO), and the United Nations Environment Programme (UNEP).

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Spectroscopy Experiment - Kalamazoo Valley Community …

and determining the concentration of cobalt (II) chloride in unknown samples. Cobalt (II) chloride is often used to detect moisture. The anhydrous form of cobalt chloride is blue, while the hydrated form cobalt (II) chloride hexahydrate is pink. It is sometimes used as invisible ink. Using an eyedropper, drop several drops of the cobalt ...

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Solved: PRECIPITATION TITRATION OF COBALT CHLORIDE Part …

Question: PRECIPITATION TITRATION OF COBALT CHLORIDE Part 1: Perform A Coarse Titration Take A 150 ML Erlenmeyer Flask From The Containers Shelf And Place It Onto The Workbench. Take The Cobalt Chloride Solution From The Materials Shelf And Add 10.00 ML To The Erlenmeyer Flask. Record This Volume In Your Lab Notes.

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RTECS:GF9800000 - Cobalt(II) chloride - The Registry of ...

Cobalt chloride Cobalt dichloride Cobalt muriate Cobaltous chloride Cobaltous dichloride Dichlorocobalt Kobalt chlorid (German) Skin and Eye Irritation and References. ... Inhibitor Concentration (50 percent kill): 1330.2 µmol/L/48H: In Vitro Toxicity Studies: Cell viability (mitochondrial reductase assays): MTT, XTT, MTS, WSTs assays etc. ...

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Cobalt Chloride - an overview | ScienceDirect Topics

Cobalt chloride (CoCl 2), deferoxamine mesylate (DFO), Oil Red O, insulin (INS), dexamethasone (DEX), and MIX are from Sigma (St. Louis, MO). CoCl 2 and DFO are solubilized in sterile water at a concentration of 100 mM and stored at −20° in aliquots. Oil Red O stock solution is prepared by dissolving Oil Red O at 0.3 g per 100 ml isopropanol.

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COBALT CHLORIDE - East Los Angeles College

COBALT CHLORIDE 1. Product Identification Synonyms: Cobaltous chloride, hexahydrate; cobalt (2+) chloride hexahydrate, cobalt dichloride ... Cobalt(II) Chloride 7646-79-9 90 - Yes 3. Hazards Identification ... or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. ...

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The equilibrium between two coloured cobalt species- Learn ...

The equilibrium between cobalt species Co(H2O)62+ and CoCl42− can be disturbed by changing the chloride ion concentration or by changing the temperature. The colour changes accompanying the changes in equilibrium position are as predicted by Le Chatelier's principle.

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RTECS:GF9800000 - Cobalt(II) chloride - The Registry of ...

Cobalt chloride Cobalt dichloride Cobalt muriate Cobaltous chloride Cobaltous dichloride Dichlorocobalt Kobalt chlorid (German)

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Cobalt Chloride Demonstration - csub.edu

ligand than chloride ion, but their positions can be altered by such manipulations as (1) increasing the concentration of chloride with concentrated HCl, (2) adding more water, (3) adding ethanol [95% works as well]. The ethanol changes the polarity of the solvent system and forces the chloride to coordinate more closely with the cobalt.

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substitution in complex ions - ligand exchange

Examples of ligand exchange reactions. A ligand exchange reaction is exactly what it says - a reaction in which one ligand in a complex ion is replaced by a different one. The following examples are taken from UK A' level syllabuses. Replacing water with chloride ions. Replacing the water in the hexaaquacobalt(II) ion

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Cobalt(II) chloride - Santa Cruz Biotechnology

Cobalt(II) chloride sc-252623 Hazard Alert Code Key: EXTREME HIGH MODERATE LOW Section 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION PRODUCT NAME Cobalt(II) chloride STATEMENT OF HAZARDOUS NATURE CONSIDERED A HAZARDOUS SUBSTANCE ACCORDING TO OSHA 29 CFR 1910.1200. NFPA SUPPLIER Santa Cruz Biotechnology, Inc. 2145 Delaware …

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Cobalt chloride - CreationWiki, the encyclopedia of ...

Cobalt chloride is an inorganic, crystalline compound that appears as a blue powder. When hydrated, the salt takes on a deep magenta color. This property makes cobalt chloride a very popular moisture indicator in desiccants. Although relatively stable, this compound poses several hazards to the human health, capable of damaging the respiratory and cardiovascular systems.

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Cobalt chloride 0.1 M solution | Sigma-Aldrich

Cobalt chloride 0.1M solution has been used to simulate hypoxic exposure and HIF-1 (hypoxia-inducible factor 1) expression in prostate cancer cells. It has been used to induce hypoxia in human intestinal epithelial cells. Biochem/physiol Actions Cobalt chloride induces hypoxia condition in cells by upregulating hypoxia-inducible factor-1α (HIF ...

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