Copper is a less reactive metal than calcium, therefore it cannot replace the calcium in the calcium sulphate. Refer to the related link for a reactivity series.
calcium + copper sulphate = calcium sulphate + copper hydroxide
Calcium Sulphate + Copper
A brown layer of copper gets deposited on iron nail. This change is due to a chemical reaction between copper sulphate and iron. Also the colour of the solution changes from blue to green due to the formation of iron sulphate. This reaction can be represented by the following equation: Copper sulphate + Iron = Iron sulphate + Copper solution (CuSO4) + (Fe) = (FeSO) + (Cu)
yes
This is due to something called a displacment reaction, during a displacment reaction one of the particals from one of the substances "swap" with another partical from the solution In the case of zink and copper sulphate solution, the copper and zink 'switch places to produce copper and a solution of zink sulphate. This is how, A + BC = B +AC
When an iron nail is dipped in the solution of copper sulphate solution , after a while the solution changes into the colour of green becoming iron sulphate and a brown substance is found on the iron nail which is copper so we get to know that the displacement reaction is produced
What is the metal cation that gives the 'green' colour.
No reaction
magnesium+copper sulphate =no reaction
Iron(Fe) + Copper Sulphate(CuSO4) → Iron Sulphate(Fe2SO4) + Copper(Cu)[Displacement Reaction]
Iron(Fe) + Copper Sulphate(CuSO4) → Iron Sulphate(Fe2SO4) + Copper(Cu)[Displacement Reaction]
The iron is more reactive than copper so when the iron nail is immersed in copper sulphate the iron takes sulphate ion from the copper sulphate and copper metal is deposited on top of the iron so that the nail will then look like a copper nail.The chemical reaction is called a replacement reaction, and is chemically represented as : CuSO4(compound in solution) + Fe(metal) ------>Cu(deposited metal) + FeSO4.