What would be observed in the addition of barium nitrate to magnesium sulfate? What about for barium nitrate and postassium iodide?

1 Answer
Apr 5, 2016

Macroscopic changes depend on solubility equilibria.


Barium nitrate and magnesium sulfate:

#Ba(NO_3)_2(aq) + MgSO_4(aq) rarr BaSO_4(s)darr + Mg(NO_3)_2(aq)#

Barium sulfate is quite insoluble in water. A white solid precipitates.

Barium nitrate and potassium iodide:

Both metathesis products, #BaI_2# and #KNO_3# are soluble species. Nitrates tend to be soluble. So no macroscopic change.

Lead nitrate and barium nitrate: no macroscopic change.