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Problem
Problem
For a reaction
2
A
+
B
→
product
2\text{A} + \text{B} \rightarrow \text{product}
2
A
+
B
→
product
, rate law is
−
d
[
A
]
d
t
=
k
[
A
]
-\frac{d[\text{A}]}{dt} = k[\text{A}]
−
d
t
d
[
A
]
=
k
[
A
]
. At a time when
t
=
1
k
t = \frac{1}{k}
t
=
k
1
, concentration of the reactant is : (
C
0
=
initial concentration
C_0 = \text{initial concentration}
C
0
=
initial concentration
) (a)
C
0
e
\frac{C_0}{e}
e
C
0
(b)
C
0
e
C_0 e
C
0
e
(c)
C
0
e
2
\frac{C_0}{e^2}
e
2
C
0
(d)
1
C
0
\frac{1}{C_0}
C
0
1
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