How to use the isothermal gas work calculator
Work done by an ideal gas expanding at constant temperature. Enter amount, temperature, initial volume, final volume in the fields above; the work done by gas is computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- n — Amount (mol)
- T — Temperature (K)
- V1 — Initial volume (L)
- V2 — Final volume (L)
Worked example
With amount = 1 mol, temperature = 300 K, initial volume = 10 L, final volume = 20 L, the calculator gives work done by gas ≈ 1,728.944 J.
Frequently asked questions
What is the formula for the isothermal gas work calculation?
Work done by gas (J) = n × RGAS × T × ln(V2 / V1). Here n is amount (mol), T is temperature (K), V1 is initial volume (L), V2 is final volume (L).
What inputs do I need for the isothermal gas work calculator?
You need amount in mol, temperature in K, initial volume in L, final volume in L. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.