Home
Back
Heat of Dissolution Formula:
| From: | To: |
Heat of dissolution (ΔH) is the enthalpy change when one mole of a substance dissolves in a solvent at constant pressure. For gases, this value is typically negative (exothermic) as energy is released during dissolution.
The calculator uses the heat of dissolution formula:
Where:
Explanation: The equation calculates the enthalpy change per mole of gas dissolved, which is important for understanding the thermodynamics of gas dissolution processes.
Details: Calculating heat of dissolution is crucial for understanding solubility behavior, designing industrial processes involving gas absorption, and predicting temperature effects on gas solubility in various solvents.
Tips: Enter the heat energy in kilojoules (kJ) and the amount of substance in moles (mol). Both values must be positive numbers greater than zero.
Q1: Why is heat of dissolution important for gases?
A: It helps predict how temperature affects gas solubility, which is crucial for industrial processes like carbon capture, beverage carbonation, and chemical reactions involving gases.
Q2: What factors affect heat of dissolution?
A: Temperature, pressure, nature of the gas and solvent, and concentration all influence the heat of dissolution for gases.
Q3: How does temperature affect gas dissolution?
A: For most gases, solubility decreases with increasing temperature (exothermic dissolution), while for some it increases (endothermic dissolution).
Q4: What's the difference between heat of dissolution and heat of solution?
A: Heat of dissolution specifically refers to gases dissolving in liquids, while heat of solution is a more general term that can apply to any solute-solvent combination.
Q5: Can this calculator be used for solids and liquids too?
A: While the formula is the same, the thermodynamic considerations differ. This calculator is optimized for gas dissolution calculations.