for instance:
which of the following pairs will give a precipitate when mixed?
A) AgNO3 and NaCH3COO
B)NaPO4 and Ca(ClO4)2
C)Ba(NO3)2 and NaCl
D)NH4Cl and Ca(Ch3COO)2
2007-03-03 04:00:43 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
You just determine the solubility of the two products formed, if they can easily dissolve each other, then you will not have any precipitate, if you can't dissolve one in the other, then you will have a precipitate.
And by the way, B. 2NaPO4+Ca(ClO4)շ→Ca(PO4)շ+2NaClO4 will form a precipitate of Ca(PO4)շ in a aqueous solution of NaClO4
2007-03-03 07:05:43 · answer #1 · answered by Anonymous · 0⤊ 0⤋
B will give a precipitate of calcium phosphate. Take the metal ion of one and the non-metal part of the other, and look them up in a solubility table.
2007-03-03 05:00:09 · answer #2 · answered by Gervald F 7 · 0⤊ 0⤋
there is a solubility chart.look into that. Precipitates are formed when certain compounds are added.you will find yur ans there
2007-03-03 04:05:40 · answer #3 · answered by Ana C 3 · 0⤊ 0⤋