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Question

Derive the integrated rate equation for the rate constant of a zero order reaction.

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Solution

Consider a zero order reaction A products.
The rate law is rate =d[A]dt=k[A]0=k
Rearrange above equation
d[A]=kdt
Integrate between limits [A]=[A]0 at t=0 and [A]=[A]t at t=t
[A][A]0d[A]=kt0dt
Hence, [A][A]t[A]0=k(t)t0
[A]t[A]0=kt
[A]t=kt+[A]0
k=[A]0[A]tt

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