Starting with equation (7.4) derive equation (7.5). Hint: write [Fe(CN)6-3] in terms of the formal concentration of glucose and the initial concentration of Fe(CN)6-3 and recognize that 'd' and 'k' are arbitrary constants.
(7.4) A = ?b [Fe(CN)6-3]
(7.5) A = d + k F
A = absorbance
b = path length (cm)
? = molar absorptivity (L/mol/cm)
d = constant
k = constant
F = formal concentration of glucose
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