Question

answer any one question

Answer 1

hello

here is your answer for question 4.

When copper coins are dipped in silver nitrate solution,copper being more reactive ,displaces silver from The solution.
so silver deposited in the coins.
The reaction occurred is single displacement.

the equation is:
Cu. + 2 AgNO3-------> Cu(NO3)2 + 2 Ag

Hope it helps you