Sinlge Replacement Questions?

Question

With single replacement what do these equations come out to be?
CaCl2 + Zn = ?
NaCl + Pb = ?
MgCl2 + Pb = ?
FeCl3 + Mg = ?

Answer 1

You have to look on the activity chart to see which metal is more reactive and will replace a less reactive metal. The previous answer given is nonsense. For example, Pb cannpt replace Na in NaCl as is suggested. If the single metal is less active, then there is no reaction.

Answer 2

1. CaCl2 + Zn = ZnCl2 + Ca(s)
2. 2NaCl + Pb = PbCl2 + 2Na(s)
3. MgCl2 + Pb = PbCl2 + Mg(s)
4. 2FeCl3 + 3Mg = 3MgCl2 + 2Fe(s)