Podcast
Questions and Answers
What factor affects the rate of galvanic corrosion?
What factor affects the rate of galvanic corrosion?
- Potential Difference (correct)
- Chemical Composition
- Surface Area Ratio
- Temperature Difference
What is the anodic reaction in the presence of electrolyte?
What is the anodic reaction in the presence of electrolyte?
- Zn2+ + 2e- → Zn(s)
- Zn(s) + 2H+ → Zn2+ + H2(g)
- Zn(s) → Zn2+ + 2e- (correct)
- 2H+ + 2e- → H2(g)
What happens as the distance between two electrodes increases?
What happens as the distance between two electrodes increases?
- The rate of corrosion increases
- The rate of corrosion decreases (correct)
- There is no effect on the rate of corrosion
- The type of corrosion changes
What is the cathodic reaction for a neutral or basic medium (pH = 4-10)?
What is the cathodic reaction for a neutral or basic medium (pH = 4-10)?
What is the formula for calculating potential difference in a galvanic cell?
What is the formula for calculating potential difference in a galvanic cell?