Question

Que. Show the formation of CaO by the
a. Transfer of electrons (Atomic number of Ca = 20)
B. What will you observe when
1.) Some zinc pieces are put in copper sulphate solution? Write equation also.
2.) Some silver pieces are put into green coloured ferrous sulphate solution?
​

Answer 1

B

1)When zinc is added to copper sulphate (CUSO4) solution due to more reactivity of zinc, cooper is replaced by the zinc and forms zinc sulphate. During the process, the colour of the solution changes from blue to colourless

2)No reaction will occur. The silver pieces will simply sink down to the bottom of the vessel because silver is less reactive than iron and can't displace it from its salt.