Prove that half-life period of a zero-order reaction is proportional to
initial concentration of a reactant.
Answers
Answer:
If the rate is independent of the concentrations of reactants, the order of reaction is zero. A reaction which is not the first-order reaction naturally but made first order by increasing or decreasing the concentration of one or the other reactant is known as Pseudo first order reaction.
We know, for a Zero order Reaction
k=
t
1
[A
0
]−[A]
At half life, Conc becomes
2
[A
0
]
.
Substituting, we get
t
1/2
=
2k
[A
0
]
t
1/2
∝ [A
0
].
So, the half-life of zero-order reaction is directly proportional to the concentration of reactant
Explanation:
Half life of zero order reaction is given by t
2
1
=
2k
a
where 'a' is initial concentration of reactants.
∴ half life of zero order reaction is directly proportional to the initial concentration of reactants.