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Get Answers to all your Questions
- #Chemical Bonding and molecular structure
- #Medical
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- #Chemistry
The enthalpy of solution for ionic compounds in water is:
Option: 1
Always negative
Option: 2
Always positive
Option: 3
Always zero
Option: 4
Positive, negative or zero depending on the compound
Answers (1)
The heat energy released when new bonds are made between the ions and water molecules is known as the hydration enthalpy of the ion. The hydration enthalpy is the enthalpy change when 1 mole of gaseous ions dissolve in sufficient water to give an infinitely dilute solution. Hydration enthalpies are always negative.
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