Preface
The Heat of Vaporization is the quantity of heat that needs to be absorbed to vaporize a particular quantity of liquid at a constant temperature.
According to wikipedia…
The enthalpy of vaporization (symbol ∆H) is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.
Table of contents
These are the topics I will cover next:
- What is latent heat of vaporization (definition)
- Heat of vaporization equation
- Heat of vaporization units
- How to calculate heat of vaporization
- Heat of vaporization and heat of fusion
- Heat of vaporization symbol
- How to calculate latent heat of vaporization
- How to calculate molar heat of vaporization
- How to calculate vapor pressure with heat of vaporization
Heat of vaporization equation
ΔH vap = H vapor – H liquid.
Use the formula q = m·ΔHv in which q = heat energy, m = mass, and ΔHv = heat of vaporization.
Heat of vaporization units
Heat of vaporization values are usually reported in measurement units such as J/mol or kJ/mol and referred to as the molar heat of vaporization, although J/g or kJ/kg are also often used.
Older units such as kcal/mol, cal/g, Btu/lb and others are still used sometimes.
Heat of vaporization and heat of fusion
The heat of fusion is the amount of energy required to change a solid into a liquid at its melting point.
The heat of vaporization is the energy required to change a liquid into a gas at its boiling point.
Heat of vaporization symbol
∆Hvap
Video: Heating Curve and Cooling Curve of...
Youtube has a related video on this topic: “Heating Curve and Cooling Curve of...”
Tip: Turn on the caption button if you need it. Choose “automatic translation” in the settings button, if you are not familiar to the english language.
Citation
When you need to include a fact or piece of information in an assignment or essay you should also include where and how you found that piece of information (Heat of Vaporization).
That gives credibility to your paper and it is sometimes required in higher education.
To make your life (and citation) easier just copy and paste the information below into your assignment or essay:
Luz, Gelson. Heat of Vaporization. Materials Blog. Gelsonluz.com. dd mmmm. yyyy. URL.
Now replace dd, mmmm and yyyy with the day, month, and year you browsed this page. Also replace URL for the actual url of this page. This citation format is based on MLA.
COMMENTS