4. Over a certain range of pressures and temperatures the equation of state of a cer is given with considerable accuracy by the Redlich-Kwong relation, P = RT v-b a v(v + b)T1/2 where v, R, T, P, and A are specific volume, gas constant, temperature, pressure, and constant, internal encry respectively. Drive an expression (e.g., f= f(a, b, T, v₁ and v₂) for the change of enthalpy of this substance in an isothermal process. Hint: one may start with the following equation

4. Over a certain range of pressures and temperatures the equation of state of a cer is given with considerable accuracy by the Redlich-Kwong relation, P = RT v-b a v(v + b)T1/2 where v, R, T, P, and A are specific volume, gas constant, temperature, pressure, and constant, internal encry respectively. Drive an expression (e.g., f= f(a, b, T, v₁ and v₂) for the change of enthalpy of this substance in an isothermal process. Hint: one may start with the following equation

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

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4. Over a certain range of pressures and temperatures the equation of state of a certain substance
is given with considerable accuracy by the Redlich-Kwong relation,
p =
RT
v-b
a
v(v + b)T1/2
where v, R, T, P, and A are specific volume, gas constant, temperature, pressure, and constant,
internal encry
respectively. Drive an expression (e.g., f= f(a, b, T, v₁ and v₂) for the change of enthalpy of this
substance in an isothermal process. Hint: one may start with the following equation

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