Which of the following is a product of the chemical reaction NiSO4 + K2CO3 → NiCO3 + K2SO4?

• A. K2CO3
• B. NiCO3
• C. NiSO4
• D. CO2

Answer: (B)

Verified step by step guidance

1. Identify the reactants and products in the given chemical reaction: NiSO4 + K2CO3 → NiCO3 + K2SO4.
2. Recognize that this is a double displacement (metathesis) reaction where the cations and anions exchange partners.
3. Write the ions involved: NiSO4 dissociates into Ni^{2+} and SO4^{2-}, and K2CO3 dissociates into 2 K^{+} and CO3^{2-}.
4. Exchange the anions between the cations to form the products: Ni^{2+} pairs with CO3^{2-} to form NiCO3, and K^{+} pairs with SO4^{2-} to form K2SO4.
5. Conclude that NiCO3 is one of the products formed in this reaction, confirming it as the correct answer.