4.4. Electrochemical Mechanism

Try these first

1. 1.

   What is the anode reaction in the electrochemical mechanism of corrosion?

   Hint

   Think about what happens to iron at the anode.

2. 2.

   What do we call the main substance formed from iron corrosion?

   Hint

   It's a common term people use for the oxidation of iron.

3. 3.

   What is the main product of the electrochemical reaction at the anode?

   • Oxygen
   • Electrons
   • Iron ions

   Hint

   Think about the transformation of iron.

4. 4.

   True or False: The cathodic reaction involves the formation of hydroxide ions.

   • True
   • False

   Hint

   Consider what products are formed in the reaction.

5. 5.

   Analyze a scenario where a concrete structure suffers from corrosion. Identify potential causes and propose a detailed prevention strategy.

   Hint

   Think about environmental factors and material properties.

6. 6.

   Given that rust expands more than steel, calculate the volumetric change if 1 mole of iron converts completely to iron oxide.

   Hint

   Recall the molar volume concept and the densities of the materials.