Question

Write in a zero order reaction?Derive tha rate expression for it and mention is characteristics.

Answer 1

Answer:

1. Zero order rate the rate expresion and it's character is :such chemical rxn in rate of rxn is independent of concentration of reaction are called as zero order reaction

Answer 2

Answer:

The Zero order reaction is the reaction whose rate does not depends on the concentration of reactants and remains constant throughout the course of reaction . In such a case, the rate of reaction doesn't alter with any change in the concentration of reactants.

The zero order reaction can be written as:

$R=\frac{-d[A]}{d[\tau]}=k[A]^{\circ}=k$

Explanation:

Derivation for zero order reaction:

$R=\frac{-d[A]}{d[\tau]}=k[A]^{\circ}=k$

Here k= constant

R=rate of the reaction

R=$\frac{-d[A]^{\circ}}{d[T]}=k$

Multiply by -dt on both side we get,

d[A]=-k d t

Integrating on both side

$\int_{[A]_{0}}^{[A]} d[A]=-\int_{0}^{t} k d t$

$[A]_{0}$= initial concentration of reaction [A]

$[\mathrm{A}]=[A]_{0-\mathrm{kt}}$which is a required integral form.

The characteristics are

•  The rate of the reaction does not depend upon the      concentration of reactants.

• Throughout the reaction the rate remains constant.