This is for my biomaterials class but I have no idea where to start. Help is app

Question

This is for my biomaterials class but I have no idea where to start. Help is appreciated, thanks in advance.

2. Chromium is often alloyed with other materials (such as cobalt) to provide corrosion resistance Identify conditions over which Cr could be expected to be electrochemically stable based on the Pourbaix diagram below (Clarification: use the lines labeled 0) 2-10123 456789 10 11 12 13 14 15 16 E(v) 2 1.8 CR2 CrO4 1.2 0.8 0.6 0.4 0.2 0 0.2 0.4 0.6 0.8 0.8 0.6 Crt 01-21-4 0.2 0.2 0.4 0.6 -0.8 Cr203 Cr -1.2 0-2-4-6 1.2 1.6 1.8 2-1 0 1 2 3 45 67 8 9 10 11 12 13 14 15 16 pH

Explanation / Answer

The pourbaix diagram is a map depicting the conditions of potential and pH under which a given metal species is thermodynamically stable towards oxidation or reduction. The dotted lines enclose a region where aqueous solution of Cr is stable to both oxidation and reduction

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