Chapter 1: Chemical reactions and equations

Q&A -Ask Doubts and Get Answers

Q
Chemical reactions and equations

Question:

Explain the following terms with one example each:

(a) Corrosion

(b) Rancidity

Answer:

(a)- Corrosion of metal is a redox reaction in which a metal is oxidized naturally to its ions, resulting in the partial or complete destruction of the metal. In corrosion, both oxidation and reduction take place simultaneously which leads to the formation of rust. The rust is the hydrated ferric oxide. The chemical equation for the formation of rust is shown below:

4Fe (s) + 3O2 (g) + 2xH2O (l) → 2Fe2O3.xH2O (s)

 

(b)- The process by which the substance containing oils and fats are exposed to air they get oxidized and changes its smell, taste, and colour called rancidity. The substance which reduces the oxidation of food and prevents its deterioration is called antioxidant. The nitrogen gas is an inert gas that acts as an antioxidant and prevents the oxidation of food. So, nitrogen gas is added in the bag of chips.


Related Questions for Study

What our students and parents say about us!

Choose EduSakshamยฎ
Embrace Better Learning

edusaksham-mobile-app