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Topic: Copper II sulfate

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  Copper   (Site not responding. Last check: 2007-09-17)
Copper (II) sulfate is used as a poison and a water purifier.
Copper is found in a variety of enzymes, including the copper centers of cytochrome c oxidase, the Cu-Zn containing enzyme superoxide dismutase, and is the central metal in the oxygen carrying pigment hemocyanin.
Copper in a mineral Copper is found as native copper in mineral form.
copper.kiwiki.homeip.net   (1327 words)

 [No title]
Introduction The copper cycle lab investigation typically begins with metallic copper which is reacted with nitric acid to form the copper (II) ion in solution.
The copper residue was then placed on a pre-weighed watch glass with the pre-weighed filter paper and placed in a 100 degree celsius oven until dry.
Student Procedures for using the reduction of copper as a stand-alone lab exercise The following are two procedures for using the last phase of the copper cycle lab as a stand-alone lab exercise for high school students.
www.users.csbsju.edu /~amckenna/WEBPAGE/ProDocuments/reducingagents.txt   (1334 words)

 Copper   (Site not responding. Last check: 2007-09-17)
Copper is a chemical element in the periodic table that has the symbol Cu and atomic number 29.
Copper is a reddish-coloured metal, with a high electrical and thermal conductivity (among pure metals at room temperature, only silver has a higher electrical conductivity).
It is believed that zinc and Copper compete for absorption in the digestive tract so that a diet that is excessive in one of these minerals may result in a deficieny in the other.
copper.iqnaut.net   (1284 words)

 Copper Sulfate Color   (Site not responding. Last check: 2007-09-17)
Copper is indeed red-ish by itself, and sulfur is yellow, by itself.
You have also written the name copper(II) sulfate which indicates that the copper is in a cationic form of Cu2+ (the copper metal has lost two electrons), and the sulfur is in an anion complex of sulfate (SO4 2-).
Thus, neither the copper nor the sulfur is in its atomic form.
www.newton.dep.anl.gov /askasci/chem03/chem03642.htm   (447 words)

Furthermore, copper and many of its compounds show catalytic activity [e.g., copper(II) oxide is used as a catalyst in the manufacture of methanol, and several copper-containing enzymes are involved in photosynthesis and in respiration].
When this solution is electrolyzed, the cathodic reaction always results in copper being deposited, but the anodic reaction is dependent on the conductor acting as the anode: aqueous copper(II) ions are formed using a copper anode (Cell 1), whereas oxygen gas is evolved using either a platinum or carbon-graphite anode (Cell 2).
Copper is used extensively in water piping, alloys, electroplating, and in electrical wiring.
www.wissensdrang.com /auf1cu1.htm   (595 words)

 Changes Involving Copper
Of course, some copper will be lost during the experiment but the agreement between the original weight of the copper and the final weight of the recovered copper is dependent upon the care of handling in all materials at all stages of the series, without spillage or contamination.
Vacuum filter the copper oxide suspension from part C. Set up a Buchner funnel in a vacuum flask as demonstrated by your instructor and connect a piece of heavy-walled vacuum tubing to the flask and to the vacuum valve on the lab bench.
Transfer the copper metal to the evaporating dish using two 2.5 mL portions of acetone and allow most of the acetone to evaporate from the copper in the hood.
www.sonoma.edu /chemistry/chem115A/copper.html   (1319 words)

 International Resources, Inc.
Copper particles embedded in the eye may result in pronounced foreign body reaction with characteristic discoloration of ocular tissue.
Prolonged use of solid copper sulfate for treatment of trachoma produced inflammation and purulent reaction, and discoloration of the cornea.
When a particle of copper sulfate was left accidentally in the conjunctival sac, it caused more sever local inflammation and necrosis, corneal opacity, and symblepharon.
www.iri-us.com /msds/copper.html   (1055 words)

 016 Copper Reactions
Copper (II) hydroxide is formed by reaction with sodium hydroxide.
Copper (II) ions are reduced with zinc metal to produce copper metal.
Suppose the initial weight of the copper sample were 0.54 grams, and the recovered weight of copper were 0.50 grams.
chemmovies.unl.edu /chemistry/smallscale/SS016c.html   (1441 words)

 Copper sulfate electrolysis   (Site not responding. Last check: 2007-09-17)
A piece of clean copper wire, about 1mm in diameter, is cut and bent so that it hooks over the rim of a 10 mL conical flask with the lower end of the wire a few millimetres above the bottom of the flask; this will be the cathode.
After about two hours (this allows a good deposit of copper to form), the mass of the whole assembly is measured again (the difference from the first mass gives the mass of oxygen produced), then the mass of the washed and dried cathode gives the mass of copper produced.
The effect is that the joint between the copper and platinum is sealed inside a bead of glass.
chem.lapeer.org /Chem1Docs/CuSO4Elect.html   (621 words)

The copper (II) ion, Cu, causes the blue green colour of the solution, and is responsible for the formation of many precipitates when other substances are added to the solution.
The copper that had plated onto the platinum electrode was corroded from it and plated onto the copper cathode.
New "copper" coins are shiny, but they soon lose their shine and become a dark copper colour because of a layer of fl copper (II) oxide.
www.uq.edu.au /_School_Science_Lessons/topic15.html   (8589 words)

 AllRefer.com - cupric sulfate, Compound & Element (Compounds And Elements) - Encyclopedia
It loses part of its water of crystallization when heated to 110°C and fully dehydrates at 150°C. Cupric sulfate is used in copperplating, in dyeing (as a mordant), in wet-cell batteries, in pigments, and in insecticides, fungicides, and algicides.
The anhydrous sulfate is used to detect the presence of water in certain organic liquids; it turns into the blue pentahydrate, e.g., when added to alcohol that contains water.
Cupric sulfate is prepared by the action of warm dilute sulfuric acid (oil of vitriol) on copper metal or cupric oxide; it is also a byproduct of copper sulfide ore refining.
reference.allrefer.com /encyclopedia/C/cupricsu.html   (332 words)

 Student Handout
(copper (II) sulfate solution), termed “pregnant leach solution” or PLS, is between 2.5 g/L and 4.0 g/L of copper and is contaminated with other metals.
Copper (II) sulfate pentahydrate is a strong irritant to the skin and mucous membranes.
(copper (II) sulfate solution) referred to now as PLS, that was obtained from the leaching of malachite and data from two groups that was obtained from the leaching of chrysocolla.
teach2.eac.edu /pmcbride/purification.htm   (1233 words)

 Copper-copper(II) sulfate electrode - Wikipedia, the free encyclopedia
The Copper-copper(II) sulfate electrode is a type of reference electrode, based on the redox reaction with participation of the metal (copper) and its salt - copper(II) sulfate.
The potential of a copper copper sulfate electrode is +0.318 volt with respect to the standard hydrogen electrode.
Copper-copper(II) sulfate electrode is also used as a one of the half cell in the Daniel-Jakobi galvanic cell.
en.wikipedia.org /wiki/Copper-copper(II)_sulfate_electrode   (240 words)

 copper plating   (Site not responding. Last check: 2007-09-17)
When a piece of copper is dipped into a ferric sulfate solution, no reaction is observed.
Concept: The reaction between iron metal and copper (II) is an oxidation-reduction reaction.
Safety: Copper and zinc are heavy metals and are toxic.
chemlearn.chem.indiana.edu /demos/CopperPl.htm   (154 words)

 Copper-Iron Exchange Challenge Lab
It will be your task to determine whether iron (II) sulfate or iron (III) sulfate is formed.
[Sulfate is a polyatomic ion : a group of atoms that act like a single charged particle.
Two balanced equations for the reaction between copper (II) sulfate and iron, showing both possible products, will show you the mole ratio of copper (II) sulfate to iron needed to produce each possible product.
homepage.mac.com /sklemmer/Honors/copperironlab.htm   (443 words)

 Copper(II) sulfate - Wikipedia, the free encyclopedia
Copper sulphate is also used to test blood for anemia.
A drop of the patient's blood is dropped into a container of copper sulfate, if it sinks within a certain time, then the patient has sufficient hemoglobin levels and is not anemic.
Copper sulphate is a commonly included chemical in children's chemistry sets and is often used in high school crystal growing and copper plating experiments.
en.wikipedia.org /wiki/Copper(II)_sulfate   (448 words)

 Spectrophotometric Stoichiometry
Because this reaction uses copper II ions, the spectrophotometer was set to 620nm and the known solutions were made from stock copper II sulfate.
We prepared several copper II sulfate concentrations according to the directions in the lab handout.
For example, with a 0.001M copper II sulfate solution, the glass of the cuvette would start to be significant.
members.tripod.com /ksykang/chem/CHEM_SP2.HTM   (873 words)

 Copper/Zinc Galvanic Cell (Daniel Cell)   (Site not responding. Last check: 2007-09-17)
The spontaneous chemical reaction between zinc metal and aqueous copper (II) sulfate is conducted so as to obtain the available chemical energy released in the form of electrical energy.
The model for this chemical reaction is one where electrons leave the zinc and react with copper (II) ions.
Treat the copper sulfate solution with dilute sodium hydroxide; filter; place the recovered solid in a plastic bag and dispose of with ordinary solid trash.
dwb.unl.edu /chemistry/DoChem/DoChem116.html   (749 words)

 Copper (II) sulfate pentahydrate
Ingestion of copper compounds may produce systemic toxic effects to the kidney and liver and central nervous excitation followed by depression.
Chronic copper poisoning in man is recognized in the form of Wilson's disease.
Copper has a strong affinity for hydrous iron and manganese oxides, clays, carbonate minerals, and organic matter.
www.ecsu.ctstateu.edu /depts/env_saf/msdshtml/Copper_II_sulfate_pentahydrate.html   (1286 words)

 [No title]
In order to reduce copper(II) sulfate to copper metal, 1.2-1.4 g of zinc metal are added to the blue copper(II) sulfate solution from the previous step.
In order to make sure that all copper was extracted from the ore, a large excess of sulfuric acid was added in Part I. Much of that acid is still present in the blue solution and this also reacts with the zinc metal according to the equation:
Because hydrogen gas is explosive, the beaker should be placed under a fume hood for the duration of the reaction.
ch185.semo.edu /copper/partIIstepA.html   (425 words)

 Reactions of Copper   (Site not responding. Last check: 2007-09-17)
Copper (II) ions are reduced with zinc metal.
Since this second reaction produces hydrogen gas, the absence of bubbles as well as the disappearance of the blue color shows that the reaction is finished.
Remove the test tube from the water bath and observe the metallic copper in the bottom of the test tube.
dwb.unl.edu /Chemistry/MicroScale/MScale04.html   (966 words)

 CR Scientific: Experiments: Cupric Sulfate and Sodium Thiosulfate
The first one involves an equimolar ratio of copper sulfate to sodium thiosulfate; the second uses an excess of sodium thiosulfate.
The reaction of copper (II) with excess thiosulfate, as in Experiment 2, shows almost complete loss of color (with perhaps a pale yellowish tinge remaining) for the first several hours.
It is likely that sulfate anion itself remains unchanged; cupric ion in solution needs an anion to go with it, and the only ones present in solution were sulfur-based.
www.crscientific.com /article-redox3.html   (1374 words)

 Experiment 10   Hydrates
It is used as a catalytic precursor, fungicide, and as a source of copper in chemical manufacturing processes.
For example, copper sulfate pentahydrate can be converted into anhydrous copper sulfate.
If water is added to the white anhydrous copper sulfate, a blue color is obtained indicating that the blue pentahydrate is regenerated.
spot.pcc.edu /~gbackes/CH222/Labs222.W05/Exp.10.Hydrates.htm   (956 words)

 Copper Ii Sulfate Solution   (Site not responding. Last check: 2007-09-17)
Copper(II) sulfate pentahydrate is available from garden supply stores as root eater.
that attention has repeatedly been directed toward all elements within Groups I and II A solution of 5 8 g Na 2 CO 3 in 55 ml ethanol deionized water is added slowly to the vigorously stirred solution of copper(II) sulfate.
Sulfuric Acid Copper (II) Salt (1:1); Copper sulfate; Blue Stone Blue Copperas Phyto Bordeaux; Bonide Copper; Fehling solution part A; Fehling A Dip nail into copper (II) sulfate solution for about 10 seconds.
www.fast-trackkabul.org /copper-ii-sulfate-solution.htm   (340 words)

 Copper Plating with Household Items   (Site not responding. Last check: 2007-09-17)
Purpose: The plating of objects is a common practice which expands from the plating of gold onto watches to chrome on the bumpers of automobiles.
Copper (II) Sulfate is sometimes used to purify the water in fish tanks although it is known to be toxic to humans in several ways.
Place the object to be copper plated into the deep blue solution and the penny into the light blue solution.
www.scientificameriken.com /yr3/plating.asp   (449 words)

 Boxes 1
To determine the concentration of copper (II) sulfate pentahydrate.
The copper (ll) sulfate pentahydrate can be weighted to determine its mass.Then we calculate the moles of copper to determine the moles of copper (II) sulfate pentahydrate.
Obtain about 30 ml of copper (II) sulfate pentahydrate solution from the stock solution provided by your teacher.
www.hsh.k12.nf.ca /chem/3202l/stoic2.htm   (286 words)

Copper, a poorer reducing agent than hydrogen, is not oxidized by H
Construct a symbol equation for the oxidation of copper by: Concentrated sulfuric acid (Mr of the gaseous product is 64).
Probably the most familiar example of a copper(I) compound is that observed when a positive result is obtained in the Fehling's test for 'reducing sugars'; e.g., warming an alkaline solution of glucose and copper(II) sulfate results in the precipitation of copper(I) oxide as a pale-orange solid.
www.wissensdrang.com /auf1cu2.htm   (662 words)

 General Chemistry Online: FAQ: Introduction to inorganic chemistry: What is blue vitriol?
The blue will reappear if the anhydrous copper sulfate is exposed to even small amounts of moisture, making it sometimes useful as a spot test for water.
ion, with the copper at the center of a square formed by the oxygens of the waters.
Copper sulfate's toxicity has curtailed its use as an algaecide and fungicide.
antoine.frostburg.edu /chem/senese/101/inorganic/faq/blue-vitriol.shtml   (319 words)

 The Effects of Copper (II) sulfate on weeds   (Site not responding. Last check: 2007-09-17)
Equipment: Used in this experiment was a dixie cup, Copper (II) sulfate, water, and a weed growing in an lightly travelled obscure area.
Procedure: The first step is to mix a good amount of the Copper (II) sulfate in with a full cup of water.
Although this experiment demonstrates that Copper (II) sulfate is not effective as a herbicide, it perhaps may be for the good as some believe Copper (II) sulfate to be a lethal contaminant.
www.scientificameriken.com /yr3/weed.asp   (230 words)

 Single Displacement Lab   (Site not responding. Last check: 2007-09-17)
Add 3-4 cm copper (II) sulfate solution to the jar, use ruler to measure.
The iron and copper sulfate underwent a single displacement reaction and became copper and iron sulfate, causing the iron of the nail to replace the copper in the solution.
The iron sulfate reacted with the copper to create coppper sulfate and iron, which coated the nail with copper sulfate turning the nail dark red while turning the solution white.
library.thinkquest.org /18406/sdlab.htm   (134 words)

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