Question

Which mixture of aqueous reactants will form a precipitate?

NaNo3 & KOH
CuNO3 & LiCl
Ba3(PO4)2 & AgNO3
Rb2S & LiOH

Answer 1

i think 3 and 4
Ba3(PO4)2 & AgNO3
Rb2S & LiOH

Answer 2

since barium phosphate cant dissolve in water i think i can rule out the
third one 4 the one is correct :)

Answer 3

I think it is the third choice, am I right? :)

Answer 4

i have confusion between 3 rd and 4th

Answer 5

Well, Ag3PO4 would be an insoluble product, wouldn't it?

Answer 6

yaaa insoluble but
barium phosphate itself is insoluble in water how it reacts with AGNO3 is what bothering me