Activities are denoted by the letter a and is

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Unformatted text preview: hat their purpose is to make sure that the free energy calculated for nonideal solutions yield the correct result without changing the general form of the equation. Activities are denoted by the letter a, and is commonly expressed in terms of activity coefficients γ which, when multiplied by the molality of the species, yields the activity, i.e., a = γm. K a ? nR ? nS m nR m nS a nR a nS RS RS R S = nP nQ = nP nQ % nP nQ . aP aQ ?P ?Q mP mQ It is generally understood that in these equations, the units of the concentrations or activities are cancelled by a term-by-term division of the standard concentration. In order to keep the notation simple, we refrain from explicitl...
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