Question

10. In which reaction, there is change in oxidation
number of N atom?

(1) 2NO, N,04
(2) 2NO, + H20-→ HNO3 + HNO2
(3) NH,OH →→NH+ + OH-
(4) N2O5 + H20-→ 2HNO3​

Answer 1

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Answer 2

Answer:

2) 2NO, + H20-→ HNO3 + HNO2

MORE TO KNOW -

• Oxidation reaction - The addition of oxygen or the removal of hydrogen in a chemical reaction is called oxidation reaction.

• Reduction reaction - The addition of hydrogen or the removal of oxygen is called reduction.

• Redox reaction - When both oxidation and reduction both happens simaltanously then the reaction is called redox reaction.

• OXIDATION IN EVERY DAY LIFE -

I) Oxidation of oil and fat containing food leads to the bad odour and taste which results in the formation of rancid substance.This process is called rancidity.

Prevention of rancidity -

i) By adding antioxidants

ii) By keeping food in refrigirators

iii) By keeping food in air tight container

iv) By preservatives

• Antioxidants - It is the substances which prevents rancidity.