Asked by Kristen
The half-life for the first-order conversion of A to B is 56.5 hours. How long does it take for the concentration of A to decrease to 10.0% of its original amount?
Our professor has given us the answer - 188hr but I am not entirely sure how he got it.
Our professor has given us the answer - 188hr but I am not entirely sure how he got it.
Answers
Answered by
DrBob222
k = 0.693/t<sub>1/2</sub>
Substitute k into the below equation.
ln(No/N) = kt
No = 100
N = 10
k from above.
Solve for t in hours.
Substitute k into the below equation.
ln(No/N) = kt
No = 100
N = 10
k from above.
Solve for t in hours.