🎓 Chemistry • Gas Laws
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Charles’s Law Calculator (V₁/T₁ = V₂/T₂)
Computes volume-temperature changes under constant pressure with automatic Celsius-to-Kelvin conversion.
Interactive Gas Cylinder & Piston Chamber
Charles’s Law (Isobaric: P = Constant) : V₁ / T₁ = V₂ / T₂
Expanded / Contracted Volume (V₂)
2.335 Liters
Direct Temperature-Volume Proportionality (Absolute Kelvin)
$V_2 = V_1 \times \frac{T_2}{T_1} = 2\text{ L} \times \frac{348.1\text{ K}}{298.1\text{ K}} = 2.335\text{ L}$
What is Charles’s Law?
Charles’s Law states that at constant pressure, the volume of a given mass of an ideal gas increases or decreases by the same factor as its absolute temperature.
Formula & Step-by-Step Calculation
V₁ / T₁ = V₂ / T₂
Volume is directly proportional to absolute temperature in Kelvin.
Worked Step-by-Step Examples
Example 1
2.0 L of gas at 25°C (298.15 K) heated to 75°C (348.15 K)
Solution: V₂ = 2.34 Liters
• 2.0 × (348.15 / 298.15) = 2.34 L
Common Real-World & Academic Use Cases
- ✓ Hot air balloon buoyancy
- ✓ Thermal expansion of aerosol cans
- ✓ Cryogenic gas contraction
How to Use the Charles’s Law Calculator (V₁/T₁ = V₂/T₂)
1
Input Initial Volume & Temp
Enter V₁ and T₁ in °C.
2
Input Final Temp
Enter T₂ in °C.
3
Read Final Volume
Inspect expanded volume in Liters.
Frequently Asked Questions
Q: Why must temperature be in Kelvin?
Because gas volume is proportional to absolute thermal kinetic energy, which is zero at 0 Kelvin.