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Question 22.1: The first modern synthetic color, Prussian blue, was made in...

The first modern synthetic color, Prussian blue, was made in 1704 in Berlin, Germany. It was heavily used in the 19th-century Japanese woodblock print The Great Wave off Kanagawa (Figure 22.4), and it continues to be popular with artists worldwide. The formula for the insoluble pigment is Fe_{4}[Fe(CN)_{6}]_{3}.

a. What is the formula of the complex ion in this compound and what is its charge if the counterion is Fe_{3}^{+}?
b. What is the oxidation state of iron in the complex ion?

Figure 22.4
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