Multiple Choice
Which of the following statements best describes an unsaturated solution according to solubility rules?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following compounds is least soluble in water?
A
NH_4Cl
B
AgCl
C
K_2SO_4
D
NaNO_3
Verified step by step guidance1
Step 1: Understand that solubility in water depends on the nature of the compound, including its ionic character and the lattice energy of the solid versus the hydration energy of the ions in water.
Step 2: Recognize that compounds containing alkali metal ions (like K\_2SO\_4 and NaNO\_3) and ammonium ion (NH\_4Cl) are generally very soluble in water due to their strong hydration and low lattice energies.
Step 3: Recall that silver chloride (AgCl) is a well-known example of a sparingly soluble salt because it has a high lattice energy and relatively low hydration energy, making it less soluble in water.
Step 4: Compare the solubility trends: NH\_4Cl, K\_2SO\_4, and NaNO\_3 are all highly soluble, while AgCl is much less soluble due to its ionic properties and lattice structure.
Step 5: Conclude that among the given compounds, AgCl is the least soluble in water based on its chemical nature and solubility rules.
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