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Fractional volume change - epsilon - Chemical Engineering Review for PE ExaminationStoichiometry and Operating Conditions:� If components A, B, and C react together to produce W and Z under constant pressure, then concentration relationships are provided below:

Module for calculation of epsilon, the fractional volume change, a parameter used extensively for variable pressure operations:
CAo moles of A (limiting reactant)
b stoichiometric coefficient of reactant B
CBo moles of B (reactant)
c stoichiometric coefficient of C (reactant)
CCo moles of C (reactant)
w stoichiometric coefficient of W (product)
CWo moles of W (product)
z stoichiometric coefficient of Z (product)
CZo moles of Z (product)
CIo moles of I (inert)