Chemistry · Fundamentals of thermodynamics: System and surroundings, extensive and intensive properties, state functions, entropy, types of processes
f we plot volume of a certain mass of a gas against temperature at constant pres
f we plot volume of a certain mass of a gas against temperature at constant pressure, we get a straight line intersecting on the negative side at \( -273^{\circ} C \) which explains about absolute zero. This graph is known as:
- A. isochor
- B. isotherm
- C. \) isotone
- D. isobar
Step-by-step solution
The plot of volume against temperature at constant pressure is a graphical representation of Charles's law, which states that volume is directly proportional to absolute temperature at constant pressure. Such a graph, where pressure remains constant, is called an isobar. The line extrapolates to -273°C, the theoretical point of zero volume (absolute zero).
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