미해결 질문
Predict the products and write a balanced molecular equation for each reaction. If no reaction occurs, write 'NO REACTION.' b. KHSO3(aq) + HNO3(aq) c. Aqueous ammonium chloride and aqueous lead(II) nitrate.
1
views
6. Chemical Quantities & Aqueous Reactions
Molecular Equations
Multiple Choice
What is the molecular equation for the precipitation reaction that occurs when aqueous solutions of potassium carbonate and zinc nitrate are mixed?
A
NO REACTION
B
K2CO3(aq) + Zn(NO3)2(aq) → 2KNO3(aq) + CO2(g) + ZnO(s)
C
K2CO3(aq) + Zn(NO3)2(aq) → ZnCO3(s) + 2KNO3(aq)
D
K2CO3(aq) + Zn(NO3)2(aq) → 2KNO3(aq) + Zn(s) + CO2(g)
검증된 단계별 안내1
Identify the reactants in the given problem: Potassium carbonate (K2CO3) and zinc nitrate (Zn(NO3)2). Both are in aqueous solutions.
Determine the possible products by exchanging the ions of the reactants. Potassium (K+) will pair with nitrate (NO3-) and zinc (Zn2+) will pair with carbonate (CO3^2-).
Write the potential products: Potassium nitrate (KNO3) and zinc carbonate (ZnCO3).
Check the solubility of the products in water. Potassium nitrate is soluble, while zinc carbonate is insoluble, indicating a precipitation reaction.
Write the balanced molecular equation for the reaction: K2CO3(aq) + Zn(NO3)2(aq) → ZnCO3(s) + 2KNO3(aq). This shows the formation of the insoluble zinc carbonate as a precipitate.
Related Videos
Related Practice
