Answer:
(a) backward direction
(b) forward direction
(c) no change
Explanation:
(a)
On increasing the concentration of NO , the reaction will go in backward direction , as, according to le chatelier's principle ,
In a chemical equilibrium , when the concentration , pressure or temperature is changed , the equilibrium of the reaction is disturbed , hence, in order to gain attain the equilibrium the reaction moves in order to counteract the changes.
So, in this case, the reaction goes back , to reduce the increased concentration of NO.
(b)
On increasing the concentration of NO2 , the reaction goes in forward direction ,
according to le chatelier's principle ,
the reaction moves in forward direction , to reduce the increased concentration of NO2.
(c)
No change ,
As, changing the volume , does not effect change in the concentration,
Hence,
No change , as the system is allowed to expand to 5 times its initial value.
