Asked by Lin
A reaction is first order and it takes 324 minutes for the reaction to be 50.0% complete. How long will it take for the reaction to be 85.0% complete at the same temperature?
2. N2O5 decomposes to N2O4 and O2 and the reaction is first order in N2O5 with a specific rate constant of 6.22 x 10^ -4 sec^-1 at 45 C. What will be the initial rate of formation of oxygen if the concentration of N2O5 is 0.100 M?
2. N2O5 decomposes to N2O4 and O2 and the reaction is first order in N2O5 with a specific rate constant of 6.22 x 10^ -4 sec^-1 at 45 C. What will be the initial rate of formation of oxygen if the concentration of N2O5 is 0.100 M?
Answers
Answered by
DrBob222
1. k = 0.693/t<sub>1/2</sub>
solve for k and substitute into the following:
ln(No/N) = kt
I would use No = 100 (just an arbitrary number), then N would be 15 left if it was 85% complete. Solve for t.
solve for k and substitute into the following:
ln(No/N) = kt
I would use No = 100 (just an arbitrary number), then N would be 15 left if it was 85% complete. Solve for t.
Answered by
Lin
Thank you so much. That makes more sense. I had in 85, not 15.
Answered by
Alsa khitab khattak
It will take 550.8min for the reaction to be 85% complete at the same temperature
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