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JEE Advanced Model Paper 8 with solutions for online practice
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© examsnet.com
Question : 25
Total: 84
The inversion of Cane sugar proceeds with constant half-life of 500 minutes at pH = 5 forany concentration of sugar. However if pH = 6 , the half-life changes to 50 minutes. Forthis reaction rate equation is rate = k
[
s
u
g
a
r
]
m
[
H
+
]
n
. The value of ”n” is.
Your Answer:
Validate
Solution:
Half life 500 for all concentrations of sugar.
Half life is independent of the conc. of the sugar. So reaction is Ist order W.R.T. sugar
For
H
+
conc.
t
1
t
2
=
(
a
2
a
1
)
n
−
1
500
50
=
(
10
−
6
10
−
5
)
n
−
1
∴ n = 0
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