Redox Flashcards
1
Q
Disproportionation
A
One substance is both oxidized and reduced
2
Q
Factors affecting rate of corrosion
A
Moisture- more H2O the better
Electrolytes- road salt acts as salt bridge
Contact with less reactive metals- more reactive loses e-
Mechanical stresses- stresses become corrosion sites
3
Q
Preventing corrosion
A
Protective coatings- rust inhibiting paint tape or plastic
Corrosion resistant metals- steel has less impurities
Cathodic protection- forcing metal object you want to protect to become the cathode
4
Q
Saltbridge ions
A
(NO3)- toward anode
Na+ to cathode
5
Q
Types of battery’s
A
Dry cell- recharge but small
Mercury- doesn’t recharge but small
Lead- rechargeable and cheap
Ni_Cad- longer lasting and rechargeable
