State the products formed in each of the following reactions: 3
● Iron is exposed to moist atmosphere.
● Sodium burns in a jar of oxygen.
● Digested food undergoes oxidation during respiration.
Answers
Explanation:
1) fe2o3.Xh2o
2)Na2O
3)co2+H2p+ATP
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Answer:
1. Corrosion is the formation of metal oxide when exposed to moist air. Rust is iron oxide. Corrosion occurs in the presence of moisture. For example, when an iron is exposed to moist air, it reacts with oxygen to form rust(Fe2O3 . xH2O).
Cathodic protection works to make the corrosion reaction thermodynamically unfavourable
Corrosion can also happen when metals like steel are placed under too much stress causing the material to crack
2. Sodium burning in pure oxygen, image 1 of 2. This is an exothermic reaction (it releases heat), as seen by the bright flame here. Sodium (Na) is a very reactive metal that must be stored under oil as it reacts with oxygen (O2) in the atmosphere. The equation for this reaction is: 2Na + O2 ---> 2NaO For an image of the combustion jar full of white fumes of sodium oxide (NaO) after this reaction
3. Respiration Is an Oxidation-Reduction Process
Once the large food molecules have been digested, respiration results in the transfer of energy from food molecules to energy-carrier molecules in the cell.