Will precipitation occur when the following solutions are mixed? if so write a balanced chemical equation for the reaction.
na2no3 and agno3
nano3 and niso4
feso4 and pb(no3)2

Na2CO3 and AgNO3  - Precipitation will occur

Equation: Na₂CO₃(aq) + AgNO₃(aq) → NaNO₃(aq) + Ag₂CO₃(s)

NaNO3 and NiSO4  - No precipitation

FeSO4 and Pb(NO3)2- Precipitation will occur

Equation: FeSO₄(aq) + Pb(NO₃)₂(aq) → Fe(NO₃)₂(aq) + PbSO₄(s)

Explanation:Precipitation reactions are types of reactions that involve reacting two soluble salts or compounds to form a soluble compound and a compound insoluble in water(precipitate).A precipitate is a compound that is insoluble in water formed during precipitation reactions.In the first case, two soluble salts Na₂CO₃ and AgNO₃ react to form aqueous NaNO₃ and Ag₂CO₃ which is the precipitate.In the third case, two soluble salts FeSO₄ and Pb(NO₃)₂ reacts to form soluble Fe(NO₃)₂ and PbSO₄ which is the precipitate.

What are the choices?

Neither model is able to show the reactivity of potassium.