calculate the rate constant for the 60% completion of first order reaction if 80% is completed in 20 min
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Answer:
it's easier to use a handy formula: rate equals distance divided by time: r = d/t. Actually, this formula comes directly from the proportion calculation -- it's just that one multiplication step has already been done for you, so it's a shortcut to learn the formula
Explanation:
Given that the rate constant for a first order reaction is 60 s
−1
.
Let a M be the initial concentration.
Final concentration will be
16
a
M.
Rate constant, k=60/s
t=
k
2.303
log(
[A]
[A]
0
)
t=
60
2.303
log
⎝
⎛
16
a
a
⎠
⎞
t=4.6×10
−2
seconds
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