After 94.995 seconds the concentration of A was reduced from 0.3688 M to 0.1464 M. What is the first order rate constant?
rate constant=changemoles/time/.3688
= .2288/(.3688(94.995))=
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To determine the first-order rate constant, we can use the formula for first-order kinetics:
ln(A₀/Aₜ) = -kt
Where:
- A₀ is the initial concentration of A
- Aₜ is the concentration of A at time t
- k is the rate constant
- t is the time
In this case, A₀ is 0.3688 M and Aₜ is 0.1464 M. We also know that t is 94.995 seconds. Plugging these values into the formula, we have:
ln(0.3688/0.1464) = -k(94.995)
To isolate k, we can rearrange the equation:
k = -ln(0.3688/0.1464) / 94.995
Using a calculator, we can calculate the value of k.