do these react?

Question

Do these react?
Do the follow chemicals react

1) CaCl and (CuNO3)2
2) CaCl and KI
3) CaCl and AgNO3
4)KNO3 and CaCl
5)Na(C2H3O2) and CaCl.

if you no what the reaction is please say!

Answer 1

1) CaCl and (CuNO3)2 no reaction
2) CaCl and KI no reaction
3) CaCl + 2AgNO3 => 2AgCl(s) + Ca(NO3)2
4)KNO3 and CaCl no reaction
5)Na(C2H3O2) and CaCl2 no reaction

Answer 2

Base on the answer above, this trend is called electron affinty.
It increase along a period and decrease down by a group for metal

it increases down by a group for non-metal

if the replacement reactant's electron affinty is greater than the one in the moleulce then there will be a reaction

1. double displacement
2.double displacement
3. double displacement
4.double displacement
5.double displacement