8)The rate of a first order reaction is 2.5 x 10-³ mol L 1 min-1 at 0.25 M concentration of reactant. The half life (in min) of the reaction is
69.3
43.5
76.6
38.7
Answers
Answered by
2
Answer:
Since for a first order reactions: Rate =K[R]
rate given =1.5×10
−2
M min
−1
at 0.5M concentration
1.5×10
−2
Mmin
−1
=K(0.5M)
K=3×10
−2
min
−1
Half-life =t
1/2
=0.693/k
t
1/2
=
0.03 min
−1
0.693
=23.1 minutes
∴ Half-life of reaction is 23.1 minutes.
Hence, the correct option is B
Answered by
4
Answer:
Option B is not the correct answer
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