The main salt components of sea water include Na+, K+, Mg2+, Ca2+, Sr2+, Cl-, SO4^2-, HCO3-, Br-, and F-. The addition of which solution would cause precipitation to occur more easily in sea water than in tap water?
A. LiOH
B. HI
C. AgNO3
D. (NH4)2SO4

Question

The main salt components of sea water include Na+, K+, Mg2+, Ca2+, Sr2+, Cl-, SO4^2-, HCO3-, Br-, and F-. The addition of which solution would cause precipitation to occur more easily in sea water than in tap water?
A. LiOH
B. HI
C. AgNO3
D. (NH4)2SO4

aaronq · Answer

Its asking you to identify which of these could form insoluble compounds. You can use a solubility table, http://periodic-table-of-elements.org/SOLUBILITY but there are some general rules. Nitrates, $NO_3^-$, and sulfates $SO_4^{2-}$are always soluble, some hydroxides aren't like $Mg(OH)_2$, it will precipitate. So i would say A

anonymous · Answer

That's a fancy periodic table. Thank you! :)

anonymous · Answer

I meant solubility table lol

aaronq · Answer

it is! no problem :)