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Copper sulfate solution starts of a blue colour. When Iron metal is added to the solution a REDOX reaction begins in which the copper is reduced (gains electrons) to become copper metal and the iron is oxidised (loses electrons) to become iron ions. When the iron ions go into solution, it will change to a green colour which is the colour of iron (II) sulfate.

As a general principle, a more reactive metal will displace a less reactive metal from solution by the process described above.

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Q: Why does iron filings in copper sulphate solution become colourless from green after sometime?
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How will you separate the components of a mixtures containing sawdust sugar and iron filings?

Use a magnet to separate the iron filings, filter the remaining sawdust and sugar water solution, evaporate the water from the sugar water solution.


What happens to iron when it reacts with copper sulfate?

A displacement reaction takes place. Iron being a more reactive element than copper displaces copper from its compound. Ferrous Sulphate which is green in color and copper a reddish brown element are formed. So, blue color of copper sulphate fades away and the solution becomes light green. Copper is deposited on the grayish iron filings.


What happened when iron filings were added into the test tube that had water and copper sulfate in it?

actually, the real experiment is to have two test tubes, one with hot water and copper sulphate and other with vinegar and iron fillings. so you put two drops of the filings in the copper sulphate one and cover test tube with your thumb. then strike a match and keep it near the mouth of the tube, when pressure builds remove your thumb and it explodes. [ tiny explosion] But if u add water ,copper sulphate with iron fillings, then it turns all brownish and stuff, thats cuz the irons stronger then the sulphate or something... i hope it helped!!!


How do you separate sand iron filings naphthalene ball and sodium chloride?

Iron filings removed magnetically. Water will dissolve sodium chloride and suspend sand. Sand can be filtered out of the solution, and salt reovered by evaporation of water. Naphthalene can be removed separately if necessary by solution of mixture in alcohol.


How do you separate a mixture of iron filings copper sulphate cystals and chalk powder?

Use a magnet to remove the iron filings from the mixture, then mix the remaining components with water. The copper sulfate will dissolve but the CaCO3 (chalk powder) will not. Filter the mixture to remove the chalk, then boil the water to recover the copper sulfate.

Related questions

Why do you use copper sulphate?

A rather incomplete question. I could use copper sulphate for a number of reasons, for example as an electrolyte for copper plating, as a medium for growing impressive deep blue crystals, as a fungicide and so on. For fun, try dropping some iron filings into a fairly concentrated solution of copper sulphate and observe how the iron filings change to a copper colour and the solution changes to a green colour.


Why colour of copper sulphate solution changes to light green when iron filings are added?

When an iron nail is dipped in the copper sulfate solution then iron displaces copper from the copper sulfate because iron is more reactive than copper.


Why was it necessary to weigh the iron filings accurately though the mass of copper sulphate taken was only approximate?

it is because iron is solid and can easily sublimes in aqueous copper sulphate


Is iron filings and sand a mixture or a solution?

It is a mixture


Could separate iron filings from copper sulphate and copper oxide with a magnet?

Yes, a magnet would remove the iron filings without attracting the copper salts, copper salts are not magnetic.


Is iron filings a mixture or solution?

Neither, it isn't soluble.


Is chili powder and iron filings a solution or a mixture?

Mixture!:)


How will separate the components of a mixture containing sawdust sugar and iron filings?

Use a magnet to separate the iron filings, filter the remaining sawdust and sugar water solution, evaporate the water from the sugar water solution.


How will you separate the components of a mixtures containing sawdust sugar and iron filings?

Use a magnet to separate the iron filings, filter the remaining sawdust and sugar water solution, evaporate the water from the sugar water solution.


What happens to iron when it reacts with copper sulfate?

A displacement reaction takes place. Iron being a more reactive element than copper displaces copper from its compound. Ferrous Sulphate which is green in color and copper a reddish brown element are formed. So, blue color of copper sulphate fades away and the solution becomes light green. Copper is deposited on the grayish iron filings.


What happened when iron filings were added into the test tube that had water and copper sulfate in it?

actually, the real experiment is to have two test tubes, one with hot water and copper sulphate and other with vinegar and iron fillings. so you put two drops of the filings in the copper sulphate one and cover test tube with your thumb. then strike a match and keep it near the mouth of the tube, when pressure builds remove your thumb and it explodes. [ tiny explosion] But if u add water ,copper sulphate with iron fillings, then it turns all brownish and stuff, thats cuz the irons stronger then the sulphate or something... i hope it helped!!!


Is powdered sulphur and iron filings a solution or a mixture?

Solutions are a type of mixture, so it's not really an either/or thing. However, in order to be considered a solution, the mixture must be homogenous, and a mixture of sulfur and iron filings is decidedly not homogeneous on a microscopic level. So it's (just) a mixture, not the specific type of mixture called a solution.