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Byju's Answer
Standard XI
Chemistry
Half and Average Life
The half-life...
Question
The half-life of
6
C
14
if its K or \lambda is
2.31
×
10
−
4
is
A
2
×
10
2
y
r
s
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B
3
×
10
3
y
r
s
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C
3.5
×
10
4
y
r
s
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D
4
×
10
3
y
r
s
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Solution
The correct option is
B
3
×
10
3
y
r
s
t
1
2
=
0.693
k
=
0.693
2.31
×
10
−
4
=
0.3
×
10
4
y
r
s
=
3.0
×
10
3
y
r
s
.
Suggest Corrections
10
Similar questions
Q.
The half-life of
6
C
14
if its K or \lambda is
2.31
×
10
−
4
is
Q.
The half-life of
6
C
14
if its K or \lambda is
2.31
×
10
−
4
is
Q.
The half-life
6
C
14
, if its
λ
is
2.31
×
10
−
4
y
e
a
r
−
1
, is:
Q.
The half-life model is often used as a representation of a first order reaction because half-life is inversely proportional to the rate constant and half-life is independent of concentration.
Based on this knowledge, calculate the half-life for a first order reaction whose rate constant is
2.31
×
10
−
2
sec
−
1
.
Q.
If the decay constant of a radioactive substance is
λ
, then its half-life and mean life are respectively
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