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← ScienceWhich risk increases when solid potassium iodide (KI) is used at high temperature?
A)Increased covalent character of KI
B)Enhanced iodide redox activity
C)Increased KI sublimation rate✓
D)Formation of metallic potassium domains
💡 Explanation
Increased temperature raises the kinetic energy of KI molecules; therefore, sublimation increases due to the **vapor pressure** rising above the ambient level. Covalent character isn't directly affected rather than redox reactions; metallic potassium would require extreme conditions.
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