E45ClassQuiz_7 2006

E45ClassQuiz_7 2006 - circuit(b electrons should flow out...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
E45: Quiz 9/22/06 NAME:_______________________________________________________________ 1. A structural support made of iron is immersed in sea water and is corroding. To decrease the corrosion rate of iron, a DC power supply is connected to the iron and to a dummy electrode. In which direction must electrons flow through the external circuit in order for iron’s corrosion rate to decrease? (a) electrons should flow into iron from the external
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: circuit. (b) electrons should flow out of iron into the external circuit. 2. A cold water pipe in a home is made of copper. The inside surface of the copper pipe is corroding. What reduction reaction accompanies the copper’s oxidation? Reduction of oxygen: ½ O 2 + 2 H + + 2 e- H 2 O 3. List four methods for decreasing aqueous corrosion. Cathodic reaction, inhibitors, coating, passivity...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online