B.4.2 (HL)—Gas work Topic Practice
B.4.2 (HL)—Gas work Topic Practice
Work through gas-process questions by reading p-V paths, using area or W = pΔV, and deciding when a step does no work.
How this is tested
- use W = pΔV on a constant-pressure step and substitute p-V values to find an unknown volume
- compare expansion and compression by judging which p-V path has the larger signed area under the graph
- state that a vertical p-V line gives zero work because ΔV = 0, so no area lies under that step