Question

Balance these equations: a)N2+__O2 ⇒__NO2

Answer 1

Answer:

N2+_2_O2 ⇒_2_NO2

N has valency of 3 while oxygen has valency of 2

consider

aN₂+bO₂⇒cNO₂

2a=c            

2b=2c⇒b=c

let a=1

⇒c=2

⇒b=2

on substituting these values we get

N₂+2O₂⇒2NO₂

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