Charles' Law

📖 What is Charles' Law?

Charles' Law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature (in Kelvin). Heat a gas and it expands; cool it and it contracts.

V₁/T₁ = V₂/T₂

Important: Temperature must always be in Kelvin. K = °C + 273.15

🔤 What Each Variable Means

V₁

Initial volumeVolume of gas before the temperature change

T₁

Initial temperature (Kelvin)Temperature before the change — MUST be in Kelvin

V₂

Final volumeVolume after the temperature change

T₂

Final temperature (Kelvin)Temperature after the change

📝 Step-by-Step Example

A gas has volume 3 L at 300 K. What is the volume at 600 K (same pressure)?

1

Identify valuesV₁=3 L, T₁=300 K, T₂=600 K

2

Apply Charles' LawV₁/T₁ = V₂/T₂ → 3/300 = V₂/600

3

Solve for V₂V₂ = 3 × (600/300) = 3 × 2

✓

Answer: V₂ = 6 L

🧮 Interactive Calculator

V₁ (initial volume)

T₁ (initial temp, K)

T₂ (final temp, K)

Result will appear here

📖 What is Charles' Law?

🔤 What Each Variable Means

📝 Step-by-Step Example

🧮 Interactive Calculator

🔗 Related

🎯 Quick Fact