Answer:
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.
