A salt may be prepared by the reaction of one salt with another salt, particularly if one of the products is insoluble.

Question

In which one of the following reactions is this demonstrated?
(NH4)2CO3 + K2SO4 \->(NH4)2SO4 + K2CO3
CuCl2 + 2 NH4NO3 \-> Cu(NO3)2 + 2 NH4Cl
Sr(NO3)2 + 2 KCl \-> SrCl2 + 2 KNO3
BaCl2 + Na2S \-> BaS + 2 NaCl
NaNO3 + KCl \-> NaCl + KNO3

Answer 1

Please disregard this question. It's been answered: BaCl2 + Na2S \-> BaS + 2 NaCl