Complete and balance the precipitation reactions. Include physical states in your equations.
Ba(NO3)2(aq) + CuSO4 (aq)--->
K3PO4(aq)+MgCl2 (aq)---->
thats the part I cannot get.. how to balance them
To complete and balance the precipitation reactions, we need to identify the products formed and their physical states.
1) Ba(NO3)2(aq) + CuSO4(aq) → BaSO4(s) + Cu(NO3)2(aq)
The balanced equation is:
Ba(NO3)2(aq) + CuSO4(aq) → BaSO4(s) + Cu(NO3)2(aq)
In this reaction, a white precipitate of BaSO4 is formed, indicating a precipitation reaction.
2) K3PO4(aq) + MgCl2(aq) → KCl(aq) + Mg3(PO4)2(s)
The balanced equation is:
K3PO4(aq) + 3MgCl2(aq) → 6KCl(aq) + Mg3(PO4)2(s)
In this reaction, a white precipitate of Mg3(PO4)2 is formed, indicating a precipitation reaction.
Note: The states of the substances are indicated by (aq) for aqueous solutions and (s) for solids.
To complete and balance the precipitation reactions, we need to determine if there will be a precipitation of a solid product when the two solutions mix. To do that, we will use a solubility table to check if the possible combinations of ions will form an insoluble compound.
In the first reaction, we have Ba(NO3)2(aq) and CuSO4(aq) as the reactants. By examining the solubility rules, we find that nitrates (NO3-) and sulfates (SO4^2-) are usually soluble, so they will remain in solution as aqueous (aq).
Now, we can set up the balanced equation for the reaction:
Ba(NO3)2(aq) + CuSO4(aq) --> BaSO4(s) + Cu(NO3)2(aq)
In this reaction, barium sulfate (BaSO4) precipitates out as a solid (s), while copper (II) nitrate (Cu(NO3)2) stays in solution.
For the second reaction, we have K3PO4(aq) and MgCl2(aq) as the reactants. Again, using the solubility rules, we can determine that potassium compounds (K+) and chloride compounds (Cl-) are typically soluble.
The balanced equation for this reaction is:
2 K3PO4(aq) + 3 MgCl2(aq) --> 6 KCl(aq) + Mg3(PO4)2(s)
In this reaction, magnesium phosphate (Mg3(PO4)2) forms as a solid (s), while potassium chloride (KCl) remains in solution.
Remember to always check the solubility rules or use a solubility table to determine the solubility of a compound and predict if a precipitation reaction will occur.
BaSO4(s) + Cu(NO3)2(aq)
Mg3(PO4)2(s) + KCl(aq)
I'll leave them for you to balance.