Question

When an object made of material P is kept immersed in the blue colour solution, then a chemical
change takes place to form a green coloured solution R and a brown layer of substance S is
deposited on the object. P is used for making nails and S is used for making electrical wires.
a. What could the material P be?
b. Name the blue coloured solution Q
c. Name the green coloured solution R.
d. What could the substance S be?

Answer 1

Fe(s) + CuSO4(aq) -> Cu(s) + FeSO4(aq) When an iron nail is dipped in copper sulphate solution, a brown coating of copper is ... and the colour of copper sulphate solution changes from blue to light green. This reaction shows that iron is more reactive than copper as it displaces… ...Chemical Reactions.