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# Integrated Rate Law Expression Of Zero Order - Chemical Kinetics Chemistry Notes | EduRev

## Physical Chemistry

Created by: Asf Institute

## Chemistry : Integrated Rate Law Expression Of Zero Order - Chemical Kinetics Chemistry Notes | EduRev

The document Integrated Rate Law Expression Of Zero Order - Chemical Kinetics Chemistry Notes | EduRev is a part of the Chemistry Course Physical Chemistry.
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Integrated Rate law Expression:

Integrated rate law expression provide the predicted temporal evolution in reactant and product concentrations for reactions having an assumed order dependence.

(1)  Zero-order Reaction: Consider the following elementary reaction For zero-order reaction, the rate law is k is rate constant. ⇒ –d[A] = k dt

If at t = 0, the init ial concentration is [A]0 and the concentration at t = t, is [A], then integrat ion yields ⇒ [A]0 – [A] = kt
This is integrated rate equation for a zero-order reaction in terms of reactant. = k d[P] = k dt
at              t = 0,  [P] = 0
and at        t = t, [P] = [P]
then integration yields [P] = kt
This is integrated rate law equation for a zero-order reaction in terms of product.
i.e. [A]0 – [A] = kt = [P]

Graph representation of zero-order reaction
[A]0 – [A] = kt
[A] = –kt + [A]0
y = mx + c Graph of reactant vs time.

[P] = kt

y = mx Graph of concentration of product vs time. [A]0 – [A] = 2kt …(i)

When t = 0 then [P] = 0 and t = t then [P] = [P]   [P] = 3kt     …(ii) …(iii)

Problem. Find the integrated rate law expression for an elementary zero order reaction given below. Sol. The rate law of above elementary reaction is given below ⇒  ⇒  – [[A] – [A]0] = kt
[A]0 – [A] = kt                                                                           …(i)

⇒    …(ii)
⇒  [P] = kt                                                                 …(iii)

From equation (i), (ii) & (iii) we get Offer running on EduRev: Apply code STAYHOME200 to get INR 200 off on our premium plan EduRev Infinity!

## Physical Chemistry

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