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en.wikipedia.org/wiki/Copper(II)_sulfate

Copper(II) sulfate, also known as copper sulphate, are the inorganic compounds with the chemical formula Cu SO 4 (H 2 O) x, where x can range from 0 to 5. The pentahydrate (x = 5) is the most common form. Older names for this compound include blue vitriol, bluestone, vitriol of copper, and Roman vitriol.

www.finishing.com/173/41.shtml

The blue colour is due to the water of crystallization (CuSO4.5H2O). When this is removed by heating, basic copper sulphate is left (CuSO4.H2O) and this can be further broken to simple CuSO4. It is essential you realise the water is not there as free liquid, but as a molecule in its own right and it is bound to the copper atom.

www.quora.com/What-makes-anhydrous-CuSO4-turn-blue-in-color

Anhydrous CuSO4 is white in color due to absence of water molecules. When we make the solution of CuSO4 , water molecules will attach to CuSO4 molecule making CuSO4 . 5H2O. This is blue in color.

www.answers.com/Q/What_color_is_CuSO4

Hydrated copper sulphate is blue in color while anhydrous copper sulphate is white in color. CuSO4 is white, the pentahydrate crystal (CuSO4.5H2O) and the aquous solution (Cu2+(aq) ions) are royal ...

pubchem.ncbi.nlm.nih.gov/compound/24463

/there are/ ... reports that 225 kg steer developed chronic poisoning & died after 122 days on daily drench of 5 g of copper sulfate (cuso4.5h2o). ... copper sulfate fed to pigs @ levels up to 400 ppm of copper caused no toxic signs, although liver copper rose sharply. levels above 1,000 ppm were usually lethal.

www.reference.com/science/color-cuso4-b1aaae24c575505b

CuSO 4 ranges in color from grayish white in powder form to bright blue in crystal form. Because of the crystal color, CuSO 4 is sometimes called bluestone.. CuSO 4, or copper sulfate, is a salt that is commonly used in pesticides, herbicides, algicides and fungicides.It is safe when handled properly but can be poisonous if ingested orally, according to the National Pesticide Information Center.

www.askiitians.com/forums/Inorganic-Chemistry/20/55349/...

CuSO4.5H2O gives [Cu(H2O)4]+2 ion which is blue in colour. That is why CuSO4.5H2O is coloured but CuSO4 is colourless or can be said white due to lack of water molecule. It absorbs moisture and turn blue in colour.

www.answers.com/Q/What_is_the_reaction_of_CuSO4_x_5H2O

CuSO4 * 5H2O ----> CuSO4 + 5H2O. This is true because CuSO4 * 5 H2O is a salt weakly bounded to water, that is why it is hydrous. When it decomposes, the weak bonds are broken making the products ...

www.quora.com/What-is-the-colour-of-CuSO4

The colour of cuso4 means copper sulphate is blue .. And. It is present in crystal form like our common salt & it is also a 1 type of salt. Use:-cuso4 used for many purpose like curing the foot and mouth diseases in animals. Use for control the plants diseases….e tc

pubchem.ncbi.nlm.nih.gov/compound/Copper_sulfate

Copper gluconate and copper sulfate were reported to be used as nutrients in milk products, processed fruit juices and drinks, soft candy, snack foods, beverages, chewing gum, and baby and infant formula. In addition, copper sulfate was reported to be used as a processing aid in alcoholic beverages. 49 FR 4009 (2/1/84)