Page 3 - LN

1. Rusting Of Iron
Fe + O --H O->
2
2
Fe O .xH O
2
2 3
(Reddish Brown)

3. Tarnishing
2. Tarnishing of of Copper
Silver Corrosion Cu+CO +O +H O --
2
2
2
Ag + H S --> > CuCO .Cu(OH) 2
3
(green)
2
Ag S (black)
2

4. Corrosion of
Al, Mg, & Zn
(protective coat
of metal oxide)

Rancidity

Oxidation of fats & oils
giving out a foul smell &

a bitter taste

1. Add anti 2. Store food in 4. Flush food
oxidants to the air tight 3. Refrigeration packets with
food items containers of food items Nitrogen gas.

3