How to Calculate Gas Thermal Expansion (V1/T1 = V2/T2)
Calculate isobaric thermal expansion step-by-step:
Enter Initial V1 & T1
Input initial volume V1 and initial temperature T1.
Convert to Kelvin
System standardizes temperatures to absolute Kelvin (K = °C + 273.15).
Enter Final T2
Input target heated or cooled temperature T2.
Compute Final V2
Multiply V2 = V1 × (T2 / T1) for new volume.
Key Features & Isobaric Thermodynamics
Isobaric Expansion Engine
Computes volume shifts under constant barometric pressure.
Absolute Temperature Scale
Automatically enforces Kelvin absolute temperature scaling.
Hot Air Balloon Physics
Explains buoyancy and volumetric thermal expansion in hot air balloons.
Physical Chemistry Guide: Charles' Law
Charles' Law (discovered by Jacques Charles in 1787) states that at constant pressure, the volume of a given mass of gas is directly proportional to its absolute temperature:V_1 / T_1 = V_2 / T_2 ⇒ V_2 = V_1 · (T_2 / T_1)
Frequently Asked Questions
?Why must temperature be in Kelvin when applying Charles' Law?
Charles' Law requires a zero point where gas volume theoretically vanishes (Absolute Zero = 0 K = -273.15°C). Using Celsius would yield zero or negative volumes.