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ALSO [4]: How would you identify these ions in aqueous solution by selective precipitation?

 

 

 

Will a precipitate form when    aqueous solutions of    are mixed? If a precipitate does form, identify the precipitate, and give the net ionic equation for the reaction.

1). Write the net ionic equation for the precipitation of nickel(II) carbonate from aqueous solution:

2). Write the net ionic equation for the precipitation of zinc carbonate from aqueous solution:

3). Write the net ionic equation for the precipitation of silver phosphate from aqueous solution:

An aqueous solution contains Fe3+, Ca2+, and Li+ ions. Which of the following could be added to this solution to selectively precipitate Fe3+ but no other ions?

The answer is: Ba(OH)₂. Please explain how to solve these types of problems. Why does each of the cations not or do precipitate with the listed answers?