Multiple Choice
Calculate the solubility of Mg(OH)₂ in 0.50 M NH₄Cl. Which of the following is the correct solubility in mol/L?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Suppose aqueous solutions of barium nitrate and potassium carbonate are mixed. What is the name of the compound that precipitates?
A
Barium carbonate
B
Potassium nitrate
C
Potassium carbonate
D
Barium nitrate
Verified step by step guidance1
Identify the reactants: Barium nitrate (Ba(NO3)2) and potassium carbonate (K2CO3).
Write the balanced chemical equation for the reaction: Ba(NO3)2 (aq) + K2CO3 (aq) → BaCO3 (s) + 2 KNO3 (aq).
Determine the solubility of the products: Barium carbonate (BaCO3) is insoluble in water, while potassium nitrate (KNO3) is soluble.
Identify the precipitate: Since barium carbonate is insoluble, it will form a solid precipitate in the solution.
Conclude that the compound that precipitates is barium carbonate (BaCO3).
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