Multiple Choice
When aqueous solutions of Pb(NO3)2 and K2SO4 are mixed, which formula represents the precipitate that forms?
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6. Chemical Quantities & Aqueous Reactions
Molecular Equations
Multiple Choice
Which of the following is a product of the chemical reaction NiSO4 + K2CO3 → NiCO3 + K2SO4?
A
K2CO3
B
NiCO3
C
NiSO4
D
CO2
Verified step by step guidance1
Identify the reactants and products in the given chemical reaction: NiSO4 + K2CO3 → NiCO3 + K2SO4.
Recognize that this is a double displacement (metathesis) reaction where the cations and anions exchange partners.
Write the ions involved: NiSO4 dissociates into Ni^{2+} and SO4^{2-}, and K2CO3 dissociates into 2 K^{+} and CO3^{2-}.
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.
Conclude that NiCO3 is one of the products formed in this reaction, confirming it as the correct answer.
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