Question

The isomerization of cyclopropane to form propane is a first order reaction. At `760 K, 85%` of a sample of cyclopropane change to propane in `79 min`. Calculate the value of the rate constant.
A. `A. 3.66 xx 10^(-2) min^(-1)`
B. `B. 1.04 xx 10^(-2) min^(-1)`
C. `C. 2.42 min^(-1)`
D. `D. 2.40 xx 10^(-2) min^(-1)`

Answer 1

Correct Answer - D
`:. k = (2.3)/(79 min) log.((100)/(100-85))`
Solve for `k ~~ 2.40 xx 10^(-2) min^(-1)`