Physical Chemistry Lab Course

Joule-Thomson effect

German version

Virtual lab course: Joule-Thomson effect

Error

Measurement

Go to instructions Go to photograph of experimental setup

The accuracy of the pressure gauges and the thermometers are as follows, respectively:

Δp=±100Pa  ,Δϑ=±0.01°C  . \begin{align*} \Delta p &= \pm100\,\mathrm{Pa} \; , \\ \Delta\vartheta &= \pm0.01\,\degree\mathrm{C} \; . \end{align*}
Inner pressure p1p_1
101.3 × 103
Pa
Pressure (inside) p1p_1: 101.3 kPa
Pressure (environment) p2p_2: 101.2 kPa
ϑ1\vartheta_1: 21.99 ℃
ϑ2\vartheta_2: 22.01 ℃

Recorded data

Name Gas ϑ1/°C\vartheta_1\,/\,°\text C ϑ2/°C\vartheta_2\,/\,°\text C p1/Pap_1\,/\,\text{Pa} p2/Pap_2\,/\,\text{Pa}

Raw data preview

The preview of the raw data is done without uncertainty analysis.

Go to instructions (analysis)
ϑ1/°C\vartheta_1\,/\,°\text Cϑ1/°C\vartheta_1\,/\,°\text C0.00.20.40.60.81.00.01.00.20.40.60.8
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Ordinate:
Abscissa:
Helium
Carbon dioxide
Nitrogen
The fits are performed without error weighting.