By measuring the temperature change accompanying a differential volume change in a free expansion across a valve and separately in a reversible adiabatic expansion, the two derivatives (∂t/∂v )h and (∂t/∂v )s can be experimentally evaluated. a. develop expressions for these derivatives in terms of the more fundamental quantities. b. evaluate these derivatives for a van derwaals fluid.

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temp rises, and expansion

answer(20) psi;

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1.            c. is smaller

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