Charles / Gay-Lussac: V ∝ T at Constant p

At fixed p, V/T = nR/p = const. Record V, T, compute V/T, take mean or fit.

School· 20 min·Related simulator: Gas Laws Interactive

Goal

Estimate nR/p from the sample mean of V/T.

Equipment

  • Piston, heater, gauge

Theory

V = nRT/p, so V/T = nR/p.

Procedure

  1. Heat the gas isobarically; log V, T, K.

Experiment

Conclusion

V/T is consistent with the fixed pressure.