Question

After 43.0 minutes, 34.0% of compound decomposed. What is the half-life of this reaction assuming first order kinetics?

Answer 1

let for first order kinetics;
\[A_0 = initial _ . amount\]
\[A_t = remaining _. amount _. at _. time_. t\]
k = reaction rate coefficient
\[\ln[A]_t = -kt + \ln[A]_0\]
\[\ln66A_0 = -43k + lnA_0\]
now we can find k.
for half-life:\[t/2 = \ln2/k\]

Answer 2

whats the value of k?

Answer 3

anyone..?