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ChemistryChemistry
David K. Ryan, Ph.D.
Department of ChemistryDepartment of ChemistryUniversity of Massachusetts LowellUniversity of Massachusetts Lowell
April 12, 2010April 12, 2010
http://http://faculty.uml.edu/david_ryanfaculty.uml.edu/david_ryan//
Fundamentals of Engineering (FE) General Exam Review Program
March 3rd ~ April 12th, 2010
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Relating Kc and Kp
The ideal gas equation PV = nRT
can be manipulated into a form that reflects a gas concentration term
P = (n/V) RT where n/V = molarity
For any gas, A; P = [A] RT
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Consider the Rxn: N2O4(g) = 2NO2(g)
Kp for this rxn follows as:
As a general expression:
where Δn = (number moles of gaseous product - number moles of gaseous reactant)
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End of Problems Section
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