Enthalpy of Formation
8. Thermochemistry / Enthalpy of Formation / Problem 5
When potassium chloride (KCl) dissolves in water to form K+ and Cl– ions, the temperature of the solution decreases.
KCl(s) → K+(aq) + Cl–(aq)
Identify which has a higher enthalpy, KCl(s) or the K+ and Cl– ions.
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