The Relation PV = NRT Holds for All Ideal Gases

question 4

Multiple Choice

The relation PV = nRT holds for all ideal gases. The additional relation PVγ holds for an adiabatic process. The figure below shows two curves: one is an adiabat and one is an isotherm. Each starts at the same pressure and volume. Which statement is correct? (Note: "∝" means "is proportional to".)

• A) Isotherm: ; Adiabat: : A is both an isotherm and an adiabat.
• B) Isotherm: ; Adiabat: : B is an isotherm, A is an adiabat.
• C) Isotherm: ; Adiabat: : A is an isotherm, B is an adiabat.
• D) Isotherm: ; Adiabat: : B is both an isotherm and an adiabat.
• E) cannot answer without additional information about the starting temperature.

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