5 Questions
Which one of these is the correct definition of enthalpy of sublimation?
The heat change when one mole of a solid is directly converted into a gaseous state at a temperature below its melting point.
Which one of these is the correct definition of enthalpy of combustion?
The heat change when one mole of a substance is burnt in excess oxygen under standard conditions.
Which one of these is the correct definition of enthalpy of solution?
The heat change associated with the dissolution of a solute in a solvent at constant pressure resulting in infinite dissolution.
Which one of these is the correct definition of enthalpy of neutralization?
The heat change associated with the reaction between an acid and a base to form one mole of water.
Which one of these is the correct representation of the heat of sublimation of iodine?
I2(s) → I2(g) ΔH = + 14.92 kcal
Study Notes
Enthalpy Definitions
- Enthalpy of sublimation is the change in enthalpy when a substance changes from the solid phase to the gas phase at constant pressure.
- Enthalpy of combustion is the change in enthalpy when a substance is burned in excess oxygen.
- Enthalpy of solution is the change in enthalpy when a substance dissolves in a solvent.
- Enthalpy of neutralization is the change in enthalpy when an acid and a base react to form a salt and water.
Heat of Sublimation
- The heat of sublimation of iodine is represented by ΔHsublimation (I2).
Test your knowledge on enthalpy with this quiz! From understanding the enthalpy of sublimation, combustion, solution, to neutralization, this quiz covers it all. Challenge yourself and see how well you know these important concepts in thermodynamics.
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