The reaction of dimerisation of NO_(2) in N_(2)O_(4) is 2NO_(2)hArrN_(2)O_(4). The reaction is carried out by taking 1 mole each of NO_(2) and N_(2)O_(4) in a closed vessel of 1 litre at 400 K. The equilibrium pressure was found to be 77 atm. The equilibrium pressure at which dissociation of N_(2)O_(4) will show degree of dissociation of N_(2)O_(4) to be 0.50 in the above case:

The reaction of dimerisation of NO_(2) in N_(2)O_(4) is 2NO_(2)hArrN_(

1.	The reaction of dimerisation of NO_(2) in N_(2)O_(4) is 2NO_(2)hArrN_(2)O_(4). The reaction is carried out by taking 1 mole each of NO_(2) and N_(2)O_(4) in a closed vessel of 1 litre at 400 K. The equilibrium pressure was found to be 77 atm. The equilibrium pressure at which dissociation of N_(2)O_(4) will show degree of dissociation of N_(2)O_(4) to be 0.50 in the above case:
Answer» `82.1 ATM` `65.7 atm` `72.0 atm` `70.0 atm` SOLUTION :`{:(N_(2)O_(4),hArr,2NO_(2)),(1,,1),(0.5,,1+0.5xx2):}` Moles at equilibrium `=2.5` `:. P_(at EQ.)=2.5xx0.0821xx400` `=82.1 atm`