EFPLAB2: Ideal Gas Law

Laboratory Test Rig Animation

Initial Volume V₁: l

Initial Pressure p₁: bar(a)

Manipulation of the Measurement

The sliders can be used to vary the initial conditions of the measurement. The sliders have no influence on a running measurement, but the initial values of the following measurement can be selected.

The toggle switch adjacent to the control panel can be used to switch between isothermal compression and expansion. The adjustable range of the initial volume is adapted to the selected direction of the change of state (compression/ expansion). The initial volume is increased or decreased by a factor of 3 in each case.

Isothermal Compression

p, V - Diagram:

A maximum of 5 isothermal curves are displayed in the p, V diagram. The further recording of isotherms leads to the step-by-step replacement of the isotherms already displayed in the order in which they were created.

Double-click in the diagram to zoom in on the drawn isotherms. Alternatively, you can use the left mouse button to drag and drop a zoom window and thus specify the area to zoom in on. Double-click again in the diagram to exit the zoom mode.

State 1 before measurement

State 2 after measurement

p_{1} = 100000 P a

m_{2} = m_{1} = 0.00666 k g

V_{1} = 0.0666 m^{3}

V_{2} = V_{1} \cdot \frac{1}{3} = 0.6666 m^{3}

m_{1} = \frac{p_{1} \cdot V_{1}}{R_{i} \cdot T_{1}} = 0.00004 k g

p_{2} = \frac{V_{1}}{V_{2}} \cdot p_{1} = 300000 P a