Cara Menghitung Gas Law
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Gas law calculators solve Boyle's, Charles's, Gay-Lussac's, and the combined gas law for pressure, volume, and temperature relationships of ideal gases.
Rumus
PV = nRT (ideal gas law); P₁V₁/T₁ = P₂V₂/T₂ (combined gas law)
- P
- Pressure (atm/Pa)
- V
- Volume (litres/m³)
- n
- Moles of gas (mol)
- R
- Gas constant (0.0821 L·atm/(mol·K))
- T
- Temperature (Kelvin)
Panduan Langkah demi Langkah
- 1Boyle's law: P₁V₁ = P₂V₂ (constant T)
- 2Charles's law: V₁/T₁ = V₂/T₂ (constant P)
- 3Gay-Lussac's: P₁/T₁ = P₂/T₂ (constant V)
- 4Combined: P₁V₁/T₁ = P₂V₂/T₂
Contoh Terpecahkan
Masukan
Boyle's: V₁=4L, P₁=2atm, P₂=4atm
Hasil
V₂ = P₁V₁/P₂ = 2×4/4 = 2L
Pertanyaan yang sering diajukan
When should I use ideal gas law vs combined?
Ideal: when n (moles) is constant or unknown. Combined: when gas amount is fixed, conditions change.
What temperature units should I use?
Always Kelvin (K = °C + 273.15) in gas law equations. Celsius and Fahrenheit don't work.
Is the ideal gas approximation accurate?
Good for most gases at normal conditions. Poor at high pressure or low temperature. Use van der Waals for precision.