Silver iodide is ...

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Silver iodide is ...

Explanation:
Solubility of a salt is governed by how easily its lattice can break apart into ions in water. For sparingly soluble salts, the solubility product (Ksp) is very small, so only a tiny amount dissolves and the solid remains. Silver iodide has an extremely small Ksp (around 8×10^-17 at room temperature), which means the concentrations of Ag+ and I- in any solution are vanishingly small. Because of this, AgI is effectively insoluble in water and stays as a solid. It also doesn’t dissolve in acid under normal conditions. The result is best described as insoluble.

Solubility of a salt is governed by how easily its lattice can break apart into ions in water. For sparingly soluble salts, the solubility product (Ksp) is very small, so only a tiny amount dissolves and the solid remains. Silver iodide has an extremely small Ksp (around 8×10^-17 at room temperature), which means the concentrations of Ag+ and I- in any solution are vanishingly small. Because of this, AgI is effectively insoluble in water and stays as a solid. It also doesn’t dissolve in acid under normal conditions. The result is best described as insoluble.

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