For a reaction

CHEMISTRY · Single correct · AP · Chemistry · Kinetics · Kinetics

Problem

For a reaction

A\rightarrow B+C

, it was found that at the end of

10\,\mathrm{min}

from the start, the total optical rotation of the system was

50^\circ

, and when the reaction was complete, it was

100^\circ

. Assuming that only

B

and

C

are optically active and dextrorotatory, calculate the rate constant of this first-order reaction. (a)

0.693\,\mathrm{min^{-1}}

(b)

0.0693\,\mathrm{s^{-1}}

(c)

0.0693\,\mathrm{min^{-1}}

(d)

0.00693\,\mathrm{s^{-1}}