Chemical Tweak presents Antoine Equation Calculator, which helps you quickly calculate vapour pressure or temperature. Using this free tool, you can find pressure at any temperature or solve for temperature at a given pressure, using a built-in chemical database or your own constants.
Antoine Equation Calculator
Antoine's Equation Calculator
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What is the Louis Charles Antoine equation?
The Louis Charles Antoine equation, more commonly known as the Antoine Equation, is an empirical formula used to estimate the vapor pressure of pure substances as a function of temperature. It’s widely used for calculations involving phase changes, such as boiling or condensation.
Where,
P is the vapor pressure.
T – Temperature (in degrees Celsius)
A, B & C – Antoine constants, specific to each chemical and valid only within a certain temperature range
These constants are typically found in literature, databases, or chemical handbooks.
Chemical Tweak had also posted various tools such as unit converter tool for chemical engineer and Vapor Pressure Calculator which is based on Clausius-Clapeyron equation. Do check it out
Frequently Asked Question
1. What is the Antoine equation used for?
It is used to calculate the vapor pressure of a pure substance at different temperatures. It helps engineers and scientists predict when a liquid will start to boil or condense under various conditions. This is important in processes like distillation, evaporation, and chemical manufacturing, where knowing the vapor pressure is essential.
2. What is the difference between Clausius-Clapeyron and Antoine equation?
The Clausius-Clapeyron equation is a theoretical formula that shows how vapor pressure changes with temperature, using basic thermodynamic properties like the heat of vaporization. While Antoine equation is empirical and based on experimental data. It’s used to accurately calculate vapor pressure for a specific substance over a limited temperature range, using constants.