Double Replacement Chemical Reactions

Question

In double replacement chemical, two ionic compounds switch partners.

I'm suppose to look up the solubility table to determine if the reactions will take place.

I'm confuse if I'm suppose to look up the new "products" on the table after switching places, and what am I looking for to determine if the reaction will occurs?

Thank you!

Answer 1

Yes, you look up the products in the solubility table and if any of the products is insoluble, then a reaction will take place. If all the products are soluble, (and not a gas, and not a weak electrolyte), then no reaction takes place. Here are two simple examples:

AgNO3(aq) + NaCl(aq) ==> AgCl(s) + NaNO3(aq) REACTION TAKES PLACE

AgNO3(aq) + NaF(aq) ==> AgF(aq) + NaNO3)aq) NO REACTION TAKES PLACE

If you look at the ionic equation for the 2nd reaction, you will see that all ions are spectators, hence no reaction.

Hope this helps explain your dilemma.