[Ann1234]

the activity series of metals can be used to predict products in double replacement reactions? sometimes true always true or never true???

I am confused about this question since you actually use the activity to predict products but also you need the solubility data to actually know which products will you get so I am not sure about the answer-I will post this also as help


thanks!!!!!!!!!

One way to consider double replacement reactions is as follows: Two solutions of ionic compounds are really just sets of dissolved ions, each solution with a positive and a negative ion material. The two are added together, forming a mixture of four ions. If two of the ions can form (1) an insoluble material, (2) a covalent material such as water, or (2) a gas that can escape, it qualifies as a reaction. Not all of the ions are really involved in the reaction. Those ions that remain in solution after the reaction has completed are called spectator ions, that is, they are not involved in the reaction. There is some question as to whether they can see the action of the other ions, but that is what they are called.

[Vidya]

In the double replacement ,activities of metals are not important.It is the solubility which determines about the reaction.

[Ann1234]

so is never true then-got it thanks!