chem help! competiton between metals?

Question

1) a)why is lead(2) nitrate used rather than lead(2) sulphate?

b) what is removed from the surface of these metals when they are cleaned?

c) why are sodium and calcium not used in the expeirment?

d) which is the most reactive metal used?

e) predict the result of adding lead to silver nitrate solution?

Answer 1

a. it's soluble, which the other isn't
b. oxide layer
c. too reactive
d. magnesium (probably, without seeing your experiment instructions!)
e. crystals of silver metal growing on the lead, which dissolves.