The rate for the decomposition of NH3 on the platinum surface is zero order

Explanation :

Given, balanced equation of decomposition of NH₃ is expressed as:

2NH₃ → N₂ + 3H₂

on the Pt metal surface is a zero order reaction.

Also given - K = 2.5 x 10^-4 mol l^-1s^-1

where K = rate constant.

Using rate law,

rate of reaction (R) for given reaction can be written as = K [C]⁰ = K = 2.5 x 10^-4 mol l^-1s^-1

Also based on rate law,

Final Answer:

Thus the ROP of N₂ and H₂ are 2.5 x 10^-4 mol l^-1s^-1 and 7.5 x 10^-4 mol l^-1s^-1 respectively.