Tardigrade
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Tardigrade
Question
Chemistry
The rate constant of a zero order reaction is 2.0 × 10-2 mol L-1 s-1. If the concentration of the reactant after 25 seconds is 0.5 M. What is the initial concentration ?
Q. The rate constant of a zero order reaction is
2.0
×
1
0
−
2
m
o
l
L
−
1
s
−
1
. If the concentration of the reactant after
25
seconds is
0.5
M
. What is the initial concentration ?
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203
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JEE Main 2013
Chemical Kinetics
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A
0.5
M
10%
B
1.25
M
10%
C
12.5
M
5%
D
1.0
M
75%
Solution:
For a zero order reaction
Rate constant
=
k
=
t
a
−
x
2
×
1
0
−
2
=
25
a
−
0.5
<
b
r
/
>
a
=
05
=
0.5
a
=
1.0
M