Identify the combination that will produce the buffer with the highest buffer capacity. Select one: a. 0.01 M CH3COOH , 0.01 M CH3COONa b. 0.1 M CH3COOH , 0.01 M CH3COONa c. 0.1 M CH3COOH , 0.1 M CH3COONa d. 0.01 M CH3COOH , 0.1 M CH3COONa

The correct answer would be b) volume versus temperature, because they are also directly proportional.

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).