What happens when iron and copper ll sulfate react

What happens when iron and copper(ll) sulfate react  

Rust is the product of a reaction between iron and oxygen. Iron can also read with substances other than oxygen. 

Use a piece of steel wool to polish the end of an Iron nail. 

Add about 3 mL of 1. OM copper (II) sulfate (CuSOJ solution to a test tube. Place the polished end of the nail into the CUSO4 solution. Let the test tube stand in a test-tube rack, and observe it for about 10 min. Record your observations. 

Explain what happened to the color of the copper(ll) sulfate solution. 

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