Chemical Kinetics and Nuclear ChemistryHard
Question
Acid catalysed hydrolysis of ester is first-order reaction and rate constant is given by
k =
where V0, Vt and V∞ are the volume of standard NaOH required to neutralise acid present at a given time ; if ester is 50% hydrolysed then :
k =
where V0, Vt and V∞ are the volume of standard NaOH required to neutralise acid present at a given time ; if ester is 50% hydrolysed then :
Options
A.V∞ = vt
B.V = (Vt - V0)
C.V∞ = 2Vt - V0
D.V∞ = 2Vt + V0
Solution
If easter 50% hydrolysed then
x =
(a0 - x) =
We can write
a0 ∞ (V∞ - V0)
(a0 - x) ∞ (V∞ - Vt)
= (V∞ - Vt)
V∞ - V0 = 2V∞ - 2Vt
Vt =
or V∞ = 2 Vt - V0
x =
(a0 - x) =
We can write
a0 ∞ (V∞ - V0)
(a0 - x) ∞ (V∞ - Vt)
= (V∞ - Vt)V∞ - V0 = 2V∞ - 2Vt
Vt =
or V∞ = 2 Vt - V0
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