Copper sulfate CUSO

Copper salts usually are the result of corrosion in the post-boiler section and may be present as red cuprous oxide (Cu20), black cupric oxide (CuO), or blue-green copper sulfate (CuSO ). Mostly, copper salts are mixed with hematite and magnetite and take on a black color. 

Because there are so many metal sulfides, chemists usually use the letter M in the formula to indicate that sulfur can combine with just about any metal (e.g., MHS, M S, M2S3, and so on). Sulfate ions (SO ) also combine with many different metal atoms to form common compounds, such as copper sulfate (CuSO ) and magnesium sulfate, calcium sulfate, lead sulfate, zinc sulfate, and barium sulfate. 

Calcium chloride, CaCl CaCl. H O CaCl. -6H2O, used as cheap drying agent Calcium oxide, CaO, used in water treatment Copper sulfate, CuSO, used as a dehydrating agent... 

To a stirred mixture of 65.38 g (1.0 mol) of zinc dust (purchased from MalUnckrodt Inc.) and 100 mL of water in a 1-L Erlenmeyer flask 1s added at 30-sec intervals two solutions of 7.6 g of copper sulfate, (CuSO Sh O) in 50 mL of water. After 1 min the mixture is filtered through a sintered-glass Buchner funnel and the zinc-copper couple is washed with two 50-mL portions of water, two 50-mL portions of acetone, and 50 mL of diethyl ether. The resulting dark gray powder is dried at 100°C at 1 urn for 4 hr and then stored under nitrogen. 

Bordeaux mixture This gets its name from its early use to protect grapevines in the wine region of Bordeaux, France. Specifically it s used to kill fungal material from plants such as fruit trees and vines. It s made of equal portions copper sulfate (CuSO ) and calcium oxide (CaO) or slaked lime (Ca(OH)2). 

Copper (Cu) Copper stimulates crop and seed production. Copper is added as copper sulfate (CuSO,.5HjO) or as ground copper slag. 

When you dissolve copper sulfate (CuSO ) in water, it forms a light blue solution, and the solution contains two ions, Cu " and (sulfate). This reaction is simply expressed as... 

Example 7.2 Calculate the weight of hydrated copper sulfate CuSO 5H2O) to prepare a 10-liter electrolyte containing 35 g/l of and 180 gH of H2SO4. The density of H2SO4 is 1.80 g/cm (1,800 g/l). Ignore additions of NaCl. 

Copper sulfate, CuSO Lump, crystal, powder Bags 100 lb drums 26.3 99... 

There are four basic sulfates that can be identified by potentiometric titration using sodium carbonate (39,40) langite [1318-78-17, CuSO -3Cu(OH)2 H2 i brochantite [12068-81 -4] CuSO -3Cu(OH)2 antedite [12019-54-4] CuSO -2Cu(OH)2 and CuS0 -Cu0-2Cu(0H)2-xH20. The basic copper(II) sulfate that is available commercially is known as the tribasic copper sulfate [12068-81 ] CuS04-3Cu(0H)2, which occurs as the green monoclinic mineral brochantite. This material is essentially insoluble in water, but dissolves readily in cold dilute mineral acids, warm acetic acid, and ammonia solutions. 

Let s begin our investigation of an electrochemical cell by assembling one. Fill a beaker with a dilute solution of silver nitrate (about 0.1 M will do) and another beaker with dilute copper sulfate. Put a silver rod in the AgN03 solution and a copper rod in the CuSO< solution. With a wire, connect the silver rod to one terminal of an... 

M ammonium chloride (NH4CI) 0.2M copper(ll) sulfate (CuSO ... 

Write a net ionic equation to show the reaction of iron (Fe) with copper (II) sulfate (CuSO ) solution. 

Copper (II) Sulfate Ammoniated Copper (II) am-mino Sulfate or Cupric Ammonia Sulfate, CuSO -4NH,.H,0 mw 245.8, dk blue cryst pdr. This compd,known since 1693 (Ref 3), can be prepd by dissolving cupric sulfate in Amm hydroxide and precipating with ale. Used in manuf of Cu arsenate, insecticides treating fiber products Refs 1) Mellor 3(1923), 253 (Monohydrated cupric cetrammino sulfate 2) Sax (1957), 502 (Called Copper ammonium sulfate) 3) Gmelin,... 

FIGURE 16.11 (a) From left to right, crystals of Cu(NH3)4S04, CuSO -SHjO, and CUSO4. (b) Aqueous solutions of copper sulfate containing [left) and not containing right) ammonia. 

The physical appearance of one mole of each of some compounds is illustrated in Figure 2-11. Two different forms of oxalic acid are shown. The formula unit (molecule) of oxalic acid is (COOH)2 (FW = 90.0 amu molar mass = 90.0 g/mol). When oxalic acid is obtained by crystallization from a water solution, however, two molecules of water are present for each molecule of oxalic acid, even though it appears dry. The formula of this hydrate is (COOH)2 2H2O (FW = 126.1 amu molar mass = 126.1 g/mol). The dot shows that the crystals contain two H2O molecules per (COOH)2 molecule. The water can be driven out of the crystals by heating to leave anhydrous oxalic acid, (COOH)2. Anhydrous means without water. Copper(II) sulfate, an ionic compound, shows similar behavior. Anhydrous copper(II) sulfate (CuSO FW = 159.6 amu molar mass = 159.6 g/mol) is almost white. Hydrated copper(II) sulfate (CuSO 5H2O FW = 249.7 amu molar mass = 249.7 g/mol) is deep blue. The following example illustrates how we might find and use the formula of a hydrate. 

Copper sulfate pentahydrate (CuSO 7H2O) is used today only as an algicide in hsh ponds and in industrial water basins at 1 ppm concentration. 

Figure 14.6-1 Two types of electrochemical cells, (a) A cell with two electrodes and shared electrolyte. One example of such a cell contains a copper electrode, a zinc electrode, and a zinc sulfate and copper sulfate electrolyte solution. The overall cell reaction is Cu" (aq) -)- Zn(s) —> Cu(s) -f Zn" (aq). (b) A cell with two separate compartments connected by a salt bridge. If the same electrodes as in the previous case were used, one compartment would contain a copper electrode and a CuSO solution, the other would have a zinc electrode and a ZnS04 solution as the electrolyte, and the two compartments would be connected by a bridge containing, for example, a sodium chloride solution.

Copper sulfate tribasic, Cu4H(Ol0S, Occurs in nature as (lie mineral brochantiu monohydrate as the mineral iangite. Initial product formed during preparation of Bordeaux mixture from CuSO, and Ca(OH), Frear. toe, cit. Also prepd from CuS04 and Cu(OH), Denk, Leschhorn, Z virtorg. 

FIGURE 291. Decremps did not know about ions. Also copper sulfate is CuSO. However, his diagram nicely shows that atomic iron will oxidize and reduce copper to the metal. 

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