Which of the following is the correct expansion of this term?
a.
b.
c.
d.
e.
A. Incorrect. This you may have gotten from Example 14-4 or elsewhere in the chapter, but those examples supplied stoichiometric coefficients (the powers the fugacity ratios are being raised to). Since one of them was negative (a reactant), its term ended up in the denominator. Since no reaction is presented here, we cannot know which stoichiometric coefficients are negative.
B. Incorrect. This is the expansion of a summation (?) about the same term.
C. Correct. The entire term is repeated i times (here three). The stoichiometric coefficients can be either positive (products) or negative (reactants).
D. Incorrect. The product operator does not “reach into” the parenthesis like this.
E. Incorrect. The product does not operate within the parenthesis.
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