Q13 of 46 Page 1

The decomposition of NH3 on platinum surface is zero order reaction. Of rate constant (k) is 4×10-3 s M-1, how long will it take to reduce the initial concnentration of NH3 from 0.1 to 0.064 M.

Given:



s M-1


Change in concentration is,


From to


Solution:


For a zero order reaction the rate law is given as,



The integrated rate law for the above equation is given as,





The time required to reduce the reactant concnentration from 0.1-0.064M is 9 second


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