Multiple Choice
Which of the following interactions and processes primarily contribute to the dissolution of ionic compounds in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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In the reaction between KNO3 and AgCl, which product forms a precipitate?
A
AgCl
B
No precipitate formed
C
KNO3
D
AgK
Verified step by step guidance1
Identify the reactants and possible products in the reaction between KNO3 and AgCl. Since KNO3 is a soluble salt and AgCl is a sparingly soluble salt, consider the ions involved: K\^{+}, NO_3\^{−}, Ag\^{+}, and Cl\^{−}.
Write the possible double displacement reaction where the cations and anions exchange partners: KNO_3 + AgCl \rightarrow KCl + AgNO_3.
Determine the solubility of the products KCl and AgNO_3 using solubility rules. Both KCl and AgNO_3 are generally soluble in water, so they remain dissolved.
Recall that AgCl is known to be poorly soluble in water and forms a solid precipitate under normal conditions, while KNO_3 is soluble and remains in solution.
Conclude that in the reaction mixture, AgCl is the compound that forms a precipitate, while KNO_3 remains dissolved, so the precipitate is AgCl.
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