Final answer:
The balanced molecular chemical equation for the reaction between Ba(NO3)2(aq) and K2SO4(aq) is Ba(NO3)2(aq) + K2SO4(aq) → BaSO4(s) + 2 KNO3(aq), where BaSO4 precipitates and KNO3 remains in solution.
Step-by-step explanation:
To answer the question, let's write the balanced chemical equation for the reaction between aqueous barium nitrate Ba(NO3)2 and aqueous potassium sulfate K2SO4. This is a double displacement reaction, where cations and anions switch partners, potentially forming a precipitate.
According to the solubility rules, barium sulfate (BaSO4) is insoluble in water and will precipitate out of the solution. Therefore, the reaction will produce barium sulfate as a precipitate and aqueous potassium nitrate (KNO3) as the soluble salt.
The balanced molecular chemical equation is:
Ba(NO3)2(aq) + K2SO4(aq) → BaSO4(s) + 2 KNO3(aq)
First, we will write the chemical equation with the formulas of the reactants and the expected products; then we will balance the equation.
The expected products are water and barium nitrate, so the initial chemical reaction is
HNO3(aq) + Ba(OH)₂ (aq) → H₂O(l) + Ba(NO3)₂(aq)
To balance the equation, we need to realize that there will be two H2O molecules, so two HNO3 molecules are required:
2 HNO3(aq) + Ba(OH)₂ (aq) → 2 H₂O(l) + Ba(NO3)₂(aq)