Stoichiometry

Q1: Which equation is not an equation of state ?

A PV = RT + B/V + y/V2 + ....

B (P + a/V2)(V-b) = RT

C

D

ANS:C -

The equation that is not an equation of state is: 𝑃𝑉=𝑅𝑇+𝐵𝑉+𝑦𝑉2+…PV=RT+VB​+V2y​+… This equation is known as the van der Waals equation, which is a modification of the ideal gas law to account for the finite size of gas molecules and the attractive forces between them. While it describes the behavior of real gases more accurately than the ideal gas law, it is not considered an equation of state in its standard form. The second equation: (𝑃+𝑎𝑉2)(𝑉−𝑏)=𝑅𝑇(P+V2a​)(V−b)=RT is the van der Waals equation of state, which is an equation that describes the state of a system under given conditions.



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