The rate constant of an isomerization reaction C - D is 6 x 10-min-1. What is the order of the reaction? If the initial concentration of C is 1 M, calculate the rate of reaction after 60 minutes.
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Answer:
Rate constant in min
−1
indicates that, the reaction is of 1st order. Hence, k=
t
2.303
log
[R]
[R]
0
4.5×10
−3
min
−1
=
60min
2.303
log(
[R]
1
)
log[R]=−0.1172=
1
.8828
or [R]= antilong
1
.8828
[A]=0.7635molL
−1
; this is the concentration after 60 min or one hour.
So, rate after 1 hour Rate=K[A]=4.5×10
−3
×0.765
=3.44×10
−3
molL
−1
min
−1
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