Asked by Angel

A certain first-order reaction A--->B is 25% complete in 42 min at 25 degrees C. What is the rate constant?

Answered by DrBob222
ln(No/N) = kt
Call No = 100.
Solve for k.
Answered by John
a first order reaction takes 69.3 minutes for 59% completion how much time will be needed for 80% completion.
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