Dissociation of `NH_(3)(g)` over solid platinum follows zero order kinetics.
`2NH_(3)(g) to N_(2)(g)+3H_(2)(g)`
The rate of reaction is `2xx10^(-3)Msec^(-1)`. Also at 300K, thermodynamic data are:
`Delta H_(f)^(@)NH_(2)`=-45kJ/mole `S_(N_(2))^(@)`=190J/K mole
`S_(NH_(3))^(@)`=200J/K mole, `S_(H_(2))^(@)`=130J/K mole
From the above data and the assumption that `DeltaH_("Rxn")^(@)` are independent of temperature, anwer the question that follows. [Take `Rxx300`kJ]
The temperature at which dissociation of ammonia attains equilibrium at 1 bar pressure is given by?
A. 500K
B. 400K
C. 300K
D. 200K
