Question

When ammonium phosphate and nickel(ii) nitrate solutions are mixed, what precipitates out?

Answer 1

Answer:

Nickel(II) phosphate is precipitated out.

Explanation:

When ammonium phosphate and nickel(ii) nitrate are mixed together they precipitate out nickel(II) phosphate from the solution.

$2(NH_4)_3PO_4+3Ni(NO_3)_2\rightarrow Ni_3(PO_4)_2+6NH_4NO_3$

2 moles of  ammonium phosphate and 3 moles of nickel(ii) nitrate gives 1 mol of nickel(II) phosphate and 6 moles of ammonium nitrate..

Answer 2

2(NH4)3PO4 (aq) + 3Ni(NO3)2(aq) ------> Ni3(PO4)2(s) + 6NH4NO3 (aq)

Ni3(PO4)2 is a precipitate.